61296520 has 16 divisors (see below), whose sum is σ = 137917260. Its totient is φ = 24518592.

The previous prime is 61296493. The next prime is 61296539. The reversal of 61296520 is 2569216.

It can be written as a sum of positive squares in 2 ways, for example, as 60497284 + 799236 = 7778^2 + 894^2 .

It is a super-2 number, since 2×61296520² = 7514526728220800, which contains 22 as substring.

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, 766167 + ... + 766246.

Almost surely, 2^61296520 is an apocalyptic number.

It is an amenable number.

61296520 is an abundant number, since it is smaller than the sum of its proper divisors (76620740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61296520 is a wasteful number, since it uses less digits than its factorization.

61296520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532424 (or 1532420 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 61296520 is about 7829.2094109176. The cubic root of 61296520 is about 394.2865291889.

It can be divided in two parts, 61296 and 520, that added together give a palindrome (61816).

The spelling of 61296520 in words is "sixty-one million, two hundred ninety-six thousand, five hundred twenty".