75513320 has 32 divisors (see below), whose sum is σ = 179901000. Its totient is φ = 28428288.

The previous prime is 75513281. The next prime is 75513329. The reversal of 75513320 is 2331557.

It can be written as a sum of positive squares in 4 ways, for example, as 72352036 + 3161284 = 8506^2 + 1778^2 .

It is a super-2 number, since 2×75513320² = 11404522994844800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 75513320.

It is not an unprimeable number, because it can be changed into a prime (75513329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54845 + ... + 56204.

Almost surely, 2^75513320 is an apocalyptic number.

It is an amenable number.

75513320 is an abundant number, since it is smaller than the sum of its proper divisors (104387680).

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

75513320 is a wasteful number, since it uses less digits than its factorization.

75513320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111077 (or 111073 counting only the distinct ones).

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

The square root of 75513320 is about 8689.8400445578. The cubic root of 75513320 is about 422.6762589859.

Adding to 75513320 its reverse (2331557), we get a palindrome (77844877).

The spelling of 75513320 in words is "seventy-five million, five hundred thirteen thousand, three hundred twenty".