51767460 has 36 divisors (see below), whose sum is σ = 157028508. Its totient is φ = 13804608.

The previous prime is 51767459. The next prime is 51767497. The reversal of 51767460 is 6476715.

It can be written as a sum of positive squares in 2 ways, for example, as 15116544 + 36650916 = 3888^2 + 6054^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143619 + ... + 143978.

It is an arithmetic number, because the mean of its divisors is an integer number (4361903).

Almost surely, 2^51767460 is an apocalyptic number.

It is an amenable number.

51767460 is an abundant number, since it is smaller than the sum of its proper divisors (105261048).

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

51767460 is a wasteful number, since it uses less digits than its factorization.

51767460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287612 (or 287607 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 51767460 is about 7194.9607365155. The cubic root of 51767460 is about 372.6939008212.

The spelling of 51767460 in words is "fifty-one million, seven hundred sixty-seven thousand, four hundred sixty".