51161536 has 28 divisors (see below), whose sum is σ = 103446072. Its totient is φ = 25096448.

The previous prime is 51161531. The next prime is 51161543. The reversal of 51161536 is 63516115.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51161531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4150 + ... + 10933.

Almost surely, 2^51161536 is an apocalyptic number.

It is an amenable number.

51161536 is an abundant number, since it is smaller than the sum of its proper divisors (52284536).

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

51161536 is a wasteful number, since it uses less digits than its factorization.

51161536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15148 (or 15138 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 51161536 is about 7152.7292693069. The cubic root of 51161536 is about 371.2340968976.

The spelling of 51161536 in words is "fifty-one million, one hundred sixty-one thousand, five hundred thirty-six".