51613480 has 32 divisors (see below), whose sum is σ = 116978400. Its totient is φ = 20494656.

The previous prime is 51613477. The next prime is 51613489. The reversal of 51613480 is 8431615.

It is not an unprimeable number, because it can be changed into a prime (51613489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 919 + ... + 10201.

It is an arithmetic number, because the mean of its divisors is an integer number (3655575).

Almost surely, 2^51613480 is an apocalyptic number.

It is an amenable number.

51613480 is an abundant number, since it is smaller than the sum of its proper divisors (65364920).

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

51613480 is a wasteful number, since it uses less digits than its factorization.

51613480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9433 (or 9429 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 51613480 is about 7184.2522227439. The cubic root of 51613480 is about 372.3240133809.

The spelling of 51613480 in words is "fifty-one million, six hundred thirteen thousand, four hundred eighty".