30452157 has 12 divisors (see below), whose sum is σ = 44817084. Its totient is φ = 19918080.

The previous prime is 30452143. The next prime is 30452159. The reversal of 30452157 is 75125403.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20848356 + 9603801 = 4566^2 + 3099^2 .

It is not a de Polignac number, because 30452157 - 2⁸ = 30451901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30452157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30452159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31444 + ... + 32397.

It is an arithmetic number, because the mean of its divisors is an integer number (3734757).

Almost surely, 2^30452157 is an apocalyptic number.

It is an amenable number.

30452157 is a deficient number, since it is larger than the sum of its proper divisors (14364927).

30452157 is a wasteful number, since it uses less digits than its factorization.

30452157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63900 (or 63897 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 30452157 is about 5518.3473069389. The cubic root of 30452157 is about 312.2765361359.

The spelling of 30452157 in words is "thirty million, four hundred fifty-two thousand, one hundred fifty-seven".