51861026 has 16 divisors (see below), whose sum is σ = 89064384. Its totient is φ = 22186224.

The previous prime is 51860993. The next prime is 51861037. The reversal of 51861026 is 62016815.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51861026.

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, 5561 + ... + 11603.

It is an arithmetic number, because the mean of its divisors is an integer number (5566524).

Almost surely, 2^51861026 is an apocalyptic number.

51861026 is a deficient number, since it is larger than the sum of its proper divisors (37203358).

51861026 is a wasteful number, since it uses less digits than its factorization.

51861026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6665.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 51861026 is about 7201.4599908630. The cubic root of 51861026 is about 372.9183049118.

The spelling of 51861026 in words is "fifty-one million, eight hundred sixty-one thousand, twenty-six".