30525261 has 16 divisors (see below), whose sum is σ = 43934016. Its totient is φ = 18740736.

The previous prime is 30525247. The next prime is 30525263. The reversal of 30525261 is 16252503.

It is not a de Polignac number, because 30525261 - 2¹⁸ = 30263117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30525263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25666 + ... + 26828.

It is an arithmetic number, because the mean of its divisors is an integer number (2745876).

Almost surely, 2^30525261 is an apocalyptic number.

It is an amenable number.

30525261 is a deficient number, since it is larger than the sum of its proper divisors (13408755).

30525261 is a wasteful number, since it uses less digits than its factorization.

30525261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 30525261 is about 5524.9670587253. The cubic root of 30525261 is about 312.5262220130.

Adding to 30525261 its reverse (16252503), we get a palindrome (46777764).

The spelling of 30525261 in words is "thirty million, five hundred twenty-five thousand, two hundred sixty-one".