51626940 has 48 divisors (see below), whose sum is σ = 146603520. Its totient is φ = 13572160.

The previous prime is 51626903. The next prime is 51626941. The reversal of 51626940 is 4962615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51626941) 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, 1800 + ... + 10319.

It is an arithmetic number, because the mean of its divisors is an integer number (3054240).

Almost surely, 2^51626940 is an apocalyptic number.

It is an amenable number.

51626940 is an abundant number, since it is smaller than the sum of its proper divisors (94976580).

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

51626940 is a wasteful number, since it uses less digits than its factorization.

51626940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12202 (or 12200 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 51626940 is about 7185.1889327978. The cubic root of 51626940 is about 372.3563760223.

The spelling of 51626940 in words is "fifty-one million, six hundred twenty-six thousand, nine hundred forty".