51151492 has 36 divisors (see below), whose sum is σ = 104538000. Its totient is φ = 21836304.

The previous prime is 51151483. The next prime is 51151493. The reversal of 51151492 is 29415115.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 51151492.

It is not an unprimeable number, because it can be changed into a prime (51151493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97543 + ... + 98065.

Almost surely, 2^51151492 is an apocalyptic number.

It is an amenable number.

51151492 is an abundant number, since it is smaller than the sum of its proper divisors (53386508).

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

51151492 is a wasteful number, since it uses less digits than its factorization.

51151492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1031 counting only the distinct ones).

The product of its digits is 1800, while the sum is 28.

The square root of 51151492 is about 7152.0271252282. The cubic root of 51151492 is about 371.2098018276.

It can be divided in two parts, 511 and 51492, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 51151492 in words is "fifty-one million, one hundred fifty-one thousand, four hundred ninety-two".