61237901 has 2 divisors, whose sum is σ = 61237902. Its totient is φ = 61237900.

The previous prime is 61237889. The next prime is 61237907. The reversal of 61237901 is 10973216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56265001 + 4972900 = 7501^2 + 2230^2 .

It is a cyclic number.

It is not a de Polignac number, because 61237901 - 2⁶ = 61237837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61237907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30618950 + 30618951.

It is an arithmetic number, because the mean of its divisors is an integer number (30618951).

Almost surely, 2^61237901 is an apocalyptic number.

It is an amenable number.

61237901 is a deficient number, since it is larger than the sum of its proper divisors (1).

61237901 is an equidigital number, since it uses as much as digits as its factorization.

61237901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 61237901 is about 7825.4649063171. The cubic root of 61237901 is about 394.1608012592.

The spelling of 61237901 in words is "sixty-one million, two hundred thirty-seven thousand, nine hundred one".