51810369 has 16 divisors (see below), whose sum is σ = 74969664. Its totient is φ = 31636800.

The previous prime is 51810361. The next prime is 51810377. The reversal of 51810369 is 96301815.

It is an interprime number because it is at equal distance from previous prime (51810361) and next prime (51810377).

It is not a de Polignac number, because 51810369 - 2³ = 51810361 is a prime.

It is a super-2 number, since 2×51810369² = 5368628671832322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51810361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39 + ... + 10179.

It is an arithmetic number, because the mean of its divisors is an integer number (4685604).

Almost surely, 2^51810369 is an apocalyptic number.

It is an amenable number.

51810369 is a deficient number, since it is larger than the sum of its proper divisors (23159295).

51810369 is a wasteful number, since it uses less digits than its factorization.

51810369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10288.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 51810369 is about 7197.9419975435. The cubic root of 51810369 is about 372.7968451944.

The spelling of 51810369 in words is "fifty-one million, eight hundred ten thousand, three hundred sixty-nine".