51632694 has 32 divisors (see below), whose sum is σ = 117542880. Its totient is φ = 16790400.

The previous prime is 51632687. The next prime is 51632717. The reversal of 51632694 is 49623615.

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 15 ways as a sum of consecutive naturals, for example, 9447 + ... + 13874.

It is an arithmetic number, because the mean of its divisors is an integer number (3673215).

Almost surely, 2^51632694 is an apocalyptic number.

51632694 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51632694 is an abundant number, since it is smaller than the sum of its proper divisors (65910186).

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

51632694 is a wasteful number, since it uses less digits than its factorization.

51632694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23373 (or 23367 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 51632694 is about 7185.5893286494. The cubic root of 51632694 is about 372.3702089746.

It can be divided in two parts, 51632 and 694, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 51632694 in words is "fifty-one million, six hundred thirty-two thousand, six hundred ninety-four".