51929790 has 32 divisors (see below), whose sum is σ = 135962496. Its totient is φ = 12588960.

The previous prime is 51929753. The next prime is 51929797. The reversal of 51929790 is 9792915.

51929790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51929797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78352 + ... + 79011.

It is an arithmetic number, because the mean of its divisors is an integer number (4248828).

Almost surely, 2^51929790 is an apocalyptic number.

51929790 is an abundant number, since it is smaller than the sum of its proper divisors (84032706).

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

51929790 is a wasteful number, since it uses less digits than its factorization.

51929790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157384.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 51929790 is about 7206.2327189732. The cubic root of 51929790 is about 373.0830530917.

The spelling of 51929790 in words is "fifty-one million, nine hundred twenty-nine thousand, seven hundred ninety".