51889365 has 24 divisors (see below), whose sum is σ = 98119008. Its totient is φ = 25158240.

The previous prime is 51889351. The next prime is 51889367. The reversal of 51889365 is 56398815.

It is not a de Polignac number, because 51889365 - 2⁸ = 51889109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 51889365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51889367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51919 + ... + 52908.

It is an arithmetic number, because the mean of its divisors is an integer number (4088292).

Almost surely, 2^51889365 is an apocalyptic number.

51889365 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51889365 is a deficient number, since it is larger than the sum of its proper divisors (46229643).

51889365 is a wasteful number, since it uses less digits than its factorization.

51889365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104849 (or 104846 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 51889365 is about 7203.4273092744. The cubic root of 51889365 is about 372.9862185154.

The spelling of 51889365 in words is "fifty-one million, eight hundred eighty-nine thousand, three hundred sixty-five".