51161626 has 16 divisors (see below), whose sum is σ = 79590600. Its totient is φ = 24635968.

The previous prime is 51161611. The next prime is 51161647. The reversal of 51161626 is 62616115.

It can be written as a sum of positive squares in 4 ways, for example, as 48288601 + 2873025 = 6949^2 + 1695^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51161594 and 51161603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28656 + ... + 30388.

Almost surely, 2^51161626 is an apocalyptic number.

51161626 is a deficient number, since it is larger than the sum of its proper divisors (28428974).

51161626 is a wasteful number, since it uses less digits than its factorization.

51161626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273.

The product of its digits is 2160, while the sum is 28.

The square root of 51161626 is about 7152.7355606090. The cubic root of 51161626 is about 371.2343145810.

The spelling of 51161626 in words is "fifty-one million, one hundred sixty-one thousand, six hundred twenty-six".