51455605 has 8 divisors (see below), whose sum is σ = 61935264. Its totient is φ = 41038800.

The previous prime is 51455603. The next prime is 51455627. The reversal of 51455605 is 50655415.

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

It is not a de Polignac number, because 51455605 - 2¹ = 51455603 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 (51455603) 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, 13891 + ... + 17200.

It is an arithmetic number, because the mean of its divisors is an integer number (7741908).

Almost surely, 2^51455605 is an apocalyptic number.

It is an amenable number.

51455605 is a deficient number, since it is larger than the sum of its proper divisors (10479659).

51455605 is a wasteful number, since it uses less digits than its factorization.

51455605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31427.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 51455605 is about 7173.2562340962. The cubic root of 51455605 is about 371.9440048488.

The spelling of 51455605 in words is "fifty-one million, four hundred fifty-five thousand, six hundred five".