51702480 has 60 divisors (see below), whose sum is σ = 173636580. Its totient is φ = 13787136.

The previous prime is 51702479. The next prime is 51702481. The reversal of 51702480 is 8420715.

It is an interprime number because it is at equal distance from previous prime (51702479) and next prime (51702481).

It can be written as a sum of positive squares in 2 ways, for example, as 11861136 + 39841344 = 3444^2 + 6312^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51702481) 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, 35185 + ... + 36624.

It is an arithmetic number, because the mean of its divisors is an integer number (2893943).

Almost surely, 2^51702480 is an apocalyptic number.

It is an amenable number.

51702480 is an abundant number, since it is smaller than the sum of its proper divisors (121934100).

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

51702480 is a wasteful number, since it uses less digits than its factorization.

51702480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71828 (or 71819 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 51702480 is about 7190.4436580784. The cubic root of 51702480 is about 372.5378968395.

The spelling of 51702480 in words is "fifty-one million, seven hundred two thousand, four hundred eighty".