305521052 has 12 divisors (see below), whose sum is σ = 557908176. Its totient is φ = 146118720.

The previous prime is 305521043. The next prime is 305521079. The reversal of 305521052 is 250125503.

It is a super-2 number, since 2×305521052² = 186686226430373408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1660349 + ... + 1660532.

It is an arithmetic number, because the mean of its divisors is an integer number (46492348).

Almost surely, 2^305521052 is an apocalyptic number.

It is an amenable number.

305521052 is a deficient number, since it is larger than the sum of its proper divisors (252387124).

305521052 is a wasteful number, since it uses less digits than its factorization.

305521052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320908 (or 3320906 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 305521052 is about 17479.1605061570. The cubic root of 305521052 is about 673.5146502737.

Adding to 305521052 its reverse (250125503), we get a palindrome (555646555).

The spelling of 305521052 in words is "three hundred five million, five hundred twenty-one thousand, fifty-two".