51031205 has 16 divisors (see below), whose sum is σ = 62118144. Its totient is φ = 40243200.

The previous prime is 51031199. The next prime is 51031217. The reversal of 51031205 is 50213015.

It is not a de Polignac number, because 51031205 - 2⁸ = 51030949 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, 193904 + ... + 194166.

It is an arithmetic number, because the mean of its divisors is an integer number (3882384).

Almost surely, 2^51031205 is an apocalyptic number.

It is an amenable number.

51031205 is a deficient number, since it is larger than the sum of its proper divisors (11086939).

51031205 is a wasteful number, since it uses less digits than its factorization.

51031205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 51031205 is about 7143.6128814487. The cubic root of 51031205 is about 370.9185965064.

The spelling of 51031205 in words is "fifty-one million, thirty-one thousand, two hundred five".