51212605 has 16 divisors (see below), whose sum is σ = 64802304. Its totient is φ = 38776320.

The previous prime is 51212599. The next prime is 51212627. The reversal of 51212605 is 50621215.

It is not a de Polignac number, because 51212605 - 2⁵ = 51212573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8860 + ... + 13450.

It is an arithmetic number, because the mean of its divisors is an integer number (4050144).

Almost surely, 2^51212605 is an apocalyptic number.

It is an amenable number.

51212605 is a deficient number, since it is larger than the sum of its proper divisors (13589699).

51212605 is a wasteful number, since it uses less digits than its factorization.

51212605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4716.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 51212605 is about 7156.2982749463. The cubic root of 51212605 is about 371.3575767029.

The spelling of 51212605 in words is "fifty-one million, two hundred twelve thousand, six hundred five".