51261006 has 16 divisors (see below), whose sum is σ = 103966848. Its totient is φ = 16846200.

The previous prime is 51260987. The next prime is 51261013. The reversal of 51261006 is 60016215.

It is a happy number.

51261006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51261006² = 5255381472264072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59740 + ... + 60591.

It is an arithmetic number, because the mean of its divisors is an integer number (6497928).

Almost surely, 2^51261006 is an apocalyptic number.

51261006 is an abundant number, since it is smaller than the sum of its proper divisors (52705842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51261006 is a wasteful number, since it uses less digits than its factorization.

51261006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120407.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 51261006 is about 7159.6791827567. The cubic root of 51261006 is about 371.4745298020.

The spelling of 51261006 in words is "fifty-one million, two hundred sixty-one thousand, six".