51404572 has 12 divisors (see below), whose sum is σ = 92860096. Its totient is φ = 24873120.

The previous prime is 51404569. The next prime is 51404579. The reversal of 51404572 is 27540415.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51404572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51404579) 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, 207153 + ... + 207400.

Almost surely, 2^51404572 is an apocalyptic number.

It is an amenable number.

51404572 is a deficient number, since it is larger than the sum of its proper divisors (41455524).

51404572 is a wasteful number, since it uses less digits than its factorization.

51404572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414588 (or 414586 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 51404572 is about 7169.6981805373. The cubic root of 51404572 is about 371.8210010994.

Adding to 51404572 its reverse (27540415), we get a palindrome (78944987).

The spelling of 51404572 in words is "fifty-one million, four hundred four thousand, five hundred seventy-two".