51700155 has 16 divisors (see below), whose sum is σ = 89083680. Its totient is φ = 25452288.

The previous prime is 51700109. The next prime is 51700163. The reversal of 51700155 is 55100715.

It is not a de Polignac number, because 51700155 - 2⁶ = 51700091 is a prime.

It is a nialpdrome in base 13.

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, 132370 + ... + 132759.

It is an arithmetic number, because the mean of its divisors is an integer number (5567730).

Almost surely, 2^51700155 is an apocalyptic number.

51700155 is a deficient number, since it is larger than the sum of its proper divisors (37383525).

51700155 is a wasteful number, since it uses less digits than its factorization.

51700155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265150.

The product of its (nonzero) digits is 875, while the sum is 24.

The square root of 51700155 is about 7190.2819833439. The cubic root of 51700155 is about 372.5323125581.

The spelling of 51700155 in words is "fifty-one million, seven hundred thousand, one hundred fifty-five".