51137630 has 16 divisors (see below), whose sum is σ = 92141280. Its totient is φ = 20434272.

The previous prime is 51137629. The next prime is 51137641. The reversal of 51137630 is 3673115.

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 51137630.

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, 11252 + ... + 15128.

It is an arithmetic number, because the mean of its divisors is an integer number (5758830).

Almost surely, 2^51137630 is an apocalyptic number.

51137630 is a deficient number, since it is larger than the sum of its proper divisors (41003650).

51137630 is a wasteful number, since it uses less digits than its factorization.

51137630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5203.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 51137630 is about 7151.0579636862. The cubic root of 51137630 is about 371.1762663107.

The spelling of 51137630 in words is "fifty-one million, one hundred thirty-seven thousand, six hundred thirty".