30453481 has 2 divisors, whose sum is σ = 30453482. Its totient is φ = 30453480.

The previous prime is 30453463. The next prime is 30453487. The reversal of 30453481 is 18435403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30426256 + 27225 = 5516^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 30453481 - 2²¹ = 28356329 is a prime.

It is a super-2 number, since 2×30453481² = 1854829010034722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30453487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15226740 + 15226741.

It is an arithmetic number, because the mean of its divisors is an integer number (15226741).

Almost surely, 2^30453481 is an apocalyptic number.

It is an amenable number.

30453481 is a deficient number, since it is larger than the sum of its proper divisors (1).

30453481 is an equidigital number, since it uses as much as digits as its factorization.

30453481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30453481 is about 5518.4672690884. The cubic root of 30453481 is about 312.2810617939.

Adding to 30453481 its reverse (18435403), we get a palindrome (48888884).

The spelling of 30453481 in words is "thirty million, four hundred fifty-three thousand, four hundred eighty-one".