51200215 has 16 divisors (see below), whose sum is σ = 67425696. Its totient is φ = 37014400.

The previous prime is 51200207. The next prime is 51200239.

51200215 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51200215 - 2³ = 51200207 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, 6825 + ... + 12205.

It is an arithmetic number, because the mean of its divisors is an integer number (4214106).

Almost surely, 2^51200215 is an apocalyptic number.

51200215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51200215 is a deficient number, since it is larger than the sum of its proper divisors (16225481).

51200215 is a wasteful number, since it uses less digits than its factorization.

51200215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5570.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 51200215 is about 7155.4325515653. The cubic root of 51200215 is about 371.3276264495.

It can be divided in two parts, 51200 and 215, that added together give a palindrome (51415).

The spelling of 51200215 in words is "fifty-one million, two hundred thousand, two hundred fifteen".