55951171625 has 8 divisors (see below), whose sum is σ = 69827062344. Its totient is φ = 44760937200.

The previous prime is 55951171597. The next prime is 55951171657. The reversal of 55951171625 is 52617115955.

It can be written as a sum of positive squares in 4 ways, for example, as 4387207696 + 51563963929 = 66236^2 + 227077^2 .

It is not a de Polignac number, because 55951171625 - 2⁸ = 55951171369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55951171625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223804562 + ... + 223804811.

It is an arithmetic number, because the mean of its divisors is an integer number (8728382793).

Almost surely, 2^55951171625 is an apocalyptic number.

It is an amenable number.

55951171625 is a deficient number, since it is larger than the sum of its proper divisors (13875890719).

55951171625 is an equidigital number, since it uses as much as digits as its factorization.

55951171625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447609388 (or 447609378 counting only the distinct ones).

The product of its digits is 472500, while the sum is 47.

It can be divided in two parts, 559511716 and 25, that multiplied together give a square (13987792900 = 118270²).

The spelling of 55951171625 in words is "fifty-five billion, nine hundred fifty-one million, one hundred seventy-one thousand, six hundred twenty-five".