51901004 has 12 divisors (see below), whose sum is σ = 91660800. Its totient is φ = 25712208.

The previous prime is 51900997. The next prime is 51901009. The reversal of 51901004 is 40010915.

It is not an unprimeable number, because it can be changed into a prime (51901009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59084 + ... + 59955.

It is an arithmetic number, because the mean of its divisors is an integer number (7638400).

Almost surely, 2^51901004 is an apocalyptic number.

It is an amenable number.

51901004 is a deficient number, since it is larger than the sum of its proper divisors (39759796).

51901004 is a wasteful number, since it uses less digits than its factorization.

51901004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119152 (or 119150 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 51901004 is about 7204.2351433029. The cubic root of 51901004 is about 373.0141038830.

Adding to 51901004 its reverse (40010915), we get a palindrome (91911919).

The spelling of 51901004 in words is "fifty-one million, nine hundred one thousand, four".