51915055 has 8 divisors (see below), whose sum is σ = 62343792. Its totient is φ = 41501568.

The previous prime is 51915053. The next prime is 51915067. The reversal of 51915055 is 55051915.

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

It is a cyclic number.

It is not a de Polignac number, because 51915055 - 2¹ = 51915053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51915053) 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, 5964 + ... + 11806.

It is an arithmetic number, because the mean of its divisors is an integer number (7792974).

Almost surely, 2^51915055 is an apocalyptic number.

51915055 is a deficient number, since it is larger than the sum of its proper divisors (10428737).

51915055 is a wasteful number, since it uses less digits than its factorization.

51915055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7625.

The product of its (nonzero) digits is 5625, while the sum is 31.

The square root of 51915055 is about 7205.2102675772. The cubic root of 51915055 is about 373.0477625014.

The spelling of 51915055 in words is "fifty-one million, nine hundred fifteen thousand, fifty-five".