51626040 has 64 divisors (see below), whose sum is σ = 163036800. Its totient is φ = 13041792.

The previous prime is 51626039. The next prime is 51626077. The reversal of 51626040 is 4062615.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51626040.

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, 9042 + ... + 13601.

It is an arithmetic number, because the mean of its divisors is an integer number (2547450).

Almost surely, 2^51626040 is an apocalyptic number.

It is an amenable number.

51626040 is an abundant number, since it is smaller than the sum of its proper divisors (111410760).

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

51626040 is a wasteful number, since it uses less digits than its factorization.

51626040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22676 (or 22672 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 51626040 is about 7185.1263036915. The cubic root of 51626040 is about 372.3542122768.

Adding to 51626040 its reverse (4062615), we get a palindrome (55688655).

The spelling of 51626040 in words is "fifty-one million, six hundred twenty-six thousand, forty".