51492120 has 32 divisors (see below), whose sum is σ = 154476720. Its totient is φ = 13731200.

The previous prime is 51492079. The next prime is 51492127. The reversal of 51492120 is 2129415.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51492127) 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, 214431 + ... + 214670.

Almost surely, 2^51492120 is an apocalyptic number.

It is an amenable number.

51492120 is an abundant number, since it is smaller than the sum of its proper divisors (102984600).

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

51492120 is a wasteful number, since it uses less digits than its factorization.

51492120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429115 (or 429111 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 51492120 is about 7175.8010005852. The cubic root of 51492120 is about 372.0319662668.

The spelling of 51492120 in words is "fifty-one million, four hundred ninety-two thousand, one hundred twenty".