4561631 has 2 divisors, whose sum is σ = 4561632. Its totient is φ = 4561630.

The previous prime is 4561621. The next prime is 4561633. The reversal of 4561631 is 1361654.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4561631 is a prime.

It is a super-2 number, since 2×4561631² = 41616954760322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 4561633, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 4561631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4561633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2280815 + 2280816.

It is an arithmetic number, because the mean of its divisors is an integer number (2280816).

Almost surely, 2^4561631 is an apocalyptic number.

4561631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4561631 is an equidigital number, since it uses as much as digits as its factorization.

4561631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 4561631 is about 2135.7975091286. The cubic root of 4561631 is about 165.8466552151.

The spelling of 4561631 in words is "four million, five hundred sixty-one thousand, six hundred thirty-one".