51895790 has 16 divisors (see below), whose sum is σ = 96634080. Its totient is φ = 20042400.

The previous prime is 51895787. The next prime is 51895801. The reversal of 51895790 is 9759815.

It is a happy number.

It is a congruent number.

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, 89186 + ... + 89765.

It is an arithmetic number, because the mean of its divisors is an integer number (6039630).

Almost surely, 2^51895790 is an apocalyptic number.

51895790 is a deficient number, since it is larger than the sum of its proper divisors (44738290).

51895790 is a wasteful number, since it uses less digits than its factorization.

51895790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178987.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 51895790 is about 7203.8732637381. The cubic root of 51895790 is about 373.0016124055.

The spelling of 51895790 in words is "fifty-one million, eight hundred ninety-five thousand, seven hundred ninety".