51468740 has 12 divisors (see below), whose sum is σ = 108084396. Its totient is φ = 20587488.

The previous prime is 51468731. The next prime is 51468749. The reversal of 51468740 is 4786415.

It is an interprime number because it is at equal distance from previous prime (51468731) and next prime (51468749).

It can be written as a sum of positive squares in 2 ways, for example, as 12630916 + 38837824 = 3554^2 + 6232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 51468740.

It is not an unprimeable number, because it can be changed into a prime (51468749) 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 3 ways as a sum of consecutive naturals, for example, 1286699 + ... + 1286738.

It is an arithmetic number, because the mean of its divisors is an integer number (9007033).

Almost surely, 2^51468740 is an apocalyptic number.

It is an amenable number.

51468740 is an abundant number, since it is smaller than the sum of its proper divisors (56615656).

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

51468740 is a wasteful number, since it uses less digits than its factorization.

51468740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573446 (or 2573444 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 51468740 is about 7174.1717291963. The cubic root of 51468740 is about 371.9756506975.

The spelling of 51468740 in words is "fifty-one million, four hundred sixty-eight thousand, seven hundred forty".