75561136 has 60 divisors (see below), whose sum is σ = 175851840. Its totient is φ = 31328640.

The previous prime is 75561133. The next prime is 75561139. The reversal of 75561136 is 63116557.

It is an interprime number because it is at equal distance from previous prime (75561133) and next prime (75561139).

It is a super-2 number, since 2×75561136² = 11418970547220992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75561131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22750 + ... + 25858.

It is an arithmetic number, because the mean of its divisors is an integer number (2930864).

Almost surely, 2^75561136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75561136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87925920).

75561136 is an abundant number, since it is smaller than the sum of its proper divisors (100290704).

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

75561136 is a wasteful number, since it uses less digits than its factorization.

75561136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162 (or 3149 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 75561136 is about 8692.5908680899. The cubic root of 75561136 is about 422.7654548329.

The spelling of 75561136 in words is "seventy-five million, five hundred sixty-one thousand, one hundred thirty-six".