51677670 has 64 divisors (see below), whose sum is σ = 136339200. Its totient is φ = 12432000.

The previous prime is 51677653. The next prime is 51677699. The reversal of 51677670 is 7677615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48645 + ... + 49695.

It is an arithmetic number, because the mean of its divisors is an integer number (2130300).

Almost surely, 2^51677670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51677670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68169600).

51677670 is an abundant number, since it is smaller than the sum of its proper divisors (84661530).

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

51677670 is a wasteful number, since it uses less digits than its factorization.

51677670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 51677670 is about 7188.7182445830. The cubic root of 51677670 is about 372.4782985120.

The spelling of 51677670 in words is "fifty-one million, six hundred seventy-seven thousand, six hundred seventy".