51889770 has 24 divisors (see below), whose sum is σ = 134913636. Its totient is φ = 13837248.

The previous prime is 51889769. The next prime is 51889781. The reversal of 51889770 is 7798815.

It can be written as a sum of positive squares in 2 ways, for example, as 51883209 + 6561 = 7203^2 + 81^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288187 + ... + 288366.

Almost surely, 2^51889770 is an apocalyptic number.

51889770 is an abundant number, since it is smaller than the sum of its proper divisors (83023866).

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

51889770 is a wasteful number, since it uses less digits than its factorization.

51889770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576566 (or 576563 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 51889770 is about 7203.4554208380. The cubic root of 51889770 is about 372.9871889071.

The spelling of 51889770 in words is "fifty-one million, eight hundred eighty-nine thousand, seven hundred seventy".