51187050 has 36 divisors (see below), whose sum is σ = 137523750. Its totient is φ = 13649760.

The previous prime is 51187039. The next prime is 51187057. The reversal of 51187050 is 5078115.

It can be written as a sum of positive squares in 3 ways, for example, as 28804689 + 22382361 = 5367^2 + 4731^2 .

It is a super-2 number, since 2×51187050² = 5240228175405000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51187057) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56425 + ... + 57324.

Almost surely, 2^51187050 is an apocalyptic number.

51187050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51187050 is an abundant number, since it is smaller than the sum of its proper divisors (86336700).

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

51187050 is a wasteful number, since it uses less digits than its factorization.

51187050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113767 (or 113759 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 51187050 is about 7154.5125620129. The cubic root of 51187050 is about 371.2957974995.

The spelling of 51187050 in words is "fifty-one million, one hundred eighty-seven thousand, fifty".