51901432 has 32 divisors (see below), whose sum is σ = 110782080. Its totient is φ = 22564960.

The previous prime is 51901427. The next prime is 51901433. The reversal of 51901432 is 23410915.

It is a junction number, because it is equal to n+sod(n) for n = 51901397 and 51901406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51901433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10798 + ... + 14845.

It is an arithmetic number, because the mean of its divisors is an integer number (3461940).

Almost surely, 2^51901432 is an apocalyptic number.

It is an amenable number.

51901432 is an abundant number, since it is smaller than the sum of its proper divisors (58880648).

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

51901432 is a wasteful number, since it uses less digits than its factorization.

51901432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25683 (or 25679 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 51901432 is about 7204.2648479911. The cubic root of 51901432 is about 373.0151292299.

The spelling of 51901432 in words is "fifty-one million, nine hundred one thousand, four hundred thirty-two".