30525137 has 4 divisors (see below), whose sum is σ = 31174656. Its totient is φ = 29875620.

The previous prime is 30525119. The next prime is 30525179. The reversal of 30525137 is 73152503.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30525137 - 2¹⁰ = 30524113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30525637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324689 + ... + 324782.

It is an arithmetic number, because the mean of its divisors is an integer number (7793664).

Almost surely, 2^30525137 is an apocalyptic number.

It is an amenable number.

30525137 is a deficient number, since it is larger than the sum of its proper divisors (649519).

30525137 is an equidigital number, since it uses as much as digits as its factorization.

30525137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649518.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 30525137 is about 5524.9558369276. The cubic root of 30525137 is about 312.5257988301.

The spelling of 30525137 in words is "thirty million, five hundred twenty-five thousand, one hundred thirty-seven".