51887190 has 32 divisors (see below), whose sum is σ = 124759296. Its totient is φ = 13811040.

The previous prime is 51887153. The next prime is 51887191. The reversal of 51887190 is 9178815.

It is a super-2 number, since 2×51887190² = 5384560972192200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51887191) 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, 19479 + ... + 21981.

It is an arithmetic number, because the mean of its divisors is an integer number (3898728).

Almost surely, 2^51887190 is an apocalyptic number.

51887190 is an abundant number, since it is smaller than the sum of its proper divisors (72872106).

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

51887190 is a wasteful number, since it uses less digits than its factorization.

51887190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3204.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 51887190 is about 7203.2763378896. The cubic root of 51887190 is about 372.9810070662.

The spelling of 51887190 in words is "fifty-one million, eight hundred eighty-seven thousand, one hundred ninety".