51121588 has 24 divisors (see below), whose sum is σ = 104739264. Its totient is φ = 21374400.

The previous prime is 51121583. The next prime is 51121591. The reversal of 51121588 is 88512115.

It is a super-2 number, since 2×51121588² = 5226833519283488, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51121583) 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, 21118 + ... + 23413.

It is an arithmetic number, because the mean of its divisors is an integer number (4364136).

Almost surely, 2^51121588 is an apocalyptic number.

It is an amenable number.

51121588 is an abundant number, since it is smaller than the sum of its proper divisors (53617676).

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

51121588 is a wasteful number, since it uses less digits than its factorization.

51121588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44583 (or 44581 counting only the distinct ones).

The product of its digits is 3200, while the sum is 31.

The square root of 51121588 is about 7149.9362234918. The cubic root of 51121588 is about 371.1374492830.

The spelling of 51121588 in words is "fifty-one million, one hundred twenty-one thousand, five hundred eighty-eight".