51702740 has 12 divisors (see below), whose sum is σ = 108575796. Its totient is φ = 20681088.

The previous prime is 51702713. The next prime is 51702751. The reversal of 51702740 is 4720715.

It can be written as a sum of positive squares in 2 ways, for example, as 38365636 + 13337104 = 6194^2 + 3652^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1292549 + ... + 1292588.

It is an arithmetic number, because the mean of its divisors is an integer number (9047983).

Almost surely, 2^51702740 is an apocalyptic number.

It is an amenable number.

51702740 is an abundant number, since it is smaller than the sum of its proper divisors (56873056).

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

51702740 is a wasteful number, since it uses less digits than its factorization.

51702740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585146 (or 2585144 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 51702740 is about 7190.4617376077. The cubic root of 51702740 is about 372.5385213079.

The spelling of 51702740 in words is "fifty-one million, seven hundred two thousand, seven hundred forty".