51641624 has 64 divisors (see below), whose sum is σ = 106064640. Its totient is φ = 23506560.

The previous prime is 51641621. The next prime is 51641633. The reversal of 51641624 is 42614615.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (5760) is a multiple of the sum of its prime factors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51641621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482579 + ... + 482685.

It is an arithmetic number, because the mean of its divisors is an integer number (1657260).

Almost surely, 2^51641624 is an apocalyptic number.

It is an amenable number.

51641624 is an abundant number, since it is smaller than the sum of its proper divisors (54423016).

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

51641624 is a wasteful number, since it uses less digits than its factorization.

51641624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 236 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 51641624 is about 7186.2106843593. The cubic root of 51641624 is about 372.3916751815.

The spelling of 51641624 in words is "fifty-one million, six hundred forty-one thousand, six hundred twenty-four".