51654620 has 12 divisors (see below), whose sum is σ = 108474744. Its totient is φ = 20661840.

The previous prime is 51654601. The next prime is 51654643. The reversal of 51654620 is 2645615.

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, 1291346 + ... + 1291385.

It is an arithmetic number, because the mean of its divisors is an integer number (9039562).

Almost surely, 2^51654620 is an apocalyptic number.

It is an amenable number.

51654620 is an abundant number, since it is smaller than the sum of its proper divisors (56820124).

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

51654620 is a wasteful number, since it uses less digits than its factorization.

51654620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582740 (or 2582738 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 51654620 is about 7187.1148592464. The cubic root of 51654620 is about 372.4229109427.

The spelling of 51654620 in words is "fifty-one million, six hundred fifty-four thousand, six hundred twenty".