51182340 has 48 divisors (see below), whose sum is σ = 156340800. Its totient is φ = 12407680.

The previous prime is 51182311. The next prime is 51182347. The reversal of 51182340 is 4328115.

It is a self number, because there is not a number n which added to its sum of digits gives 51182340.

It is not an unprimeable number, because it can be changed into a prime (51182347) 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, 38115 + ... + 39434.

It is an arithmetic number, because the mean of its divisors is an integer number (3257100).

Almost surely, 2^51182340 is an apocalyptic number.

It is an amenable number.

51182340 is an abundant number, since it is smaller than the sum of its proper divisors (105158460).

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

51182340 is a wasteful number, since it uses less digits than its factorization.

51182340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77572 (or 77570 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 51182340 is about 7154.1833915549. The cubic root of 51182340 is about 371.2844088322.

The spelling of 51182340 in words is "fifty-one million, one hundred eighty-two thousand, three hundred forty".