51639054 has 8 divisors (see below), whose sum is σ = 103278120. Its totient is φ = 17213016.

The previous prime is 51639037. The next prime is 51639067. The reversal of 51639054 is 45093615.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

51639054 is an admirable number.

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, 4303249 + ... + 4303260.

It is an arithmetic number, because the mean of its divisors is an integer number (12909765).

Almost surely, 2^51639054 is an apocalyptic number.

51639054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51639054 is a wasteful number, since it uses less digits than its factorization.

51639054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8606514.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 51639054 is about 7186.0318674495. The cubic root of 51639054 is about 372.3854975906.

The spelling of 51639054 in words is "fifty-one million, six hundred thirty-nine thousand, fifty-four".