51409953 has 48 divisors (see below), whose sum is σ = 92476800. Its totient is φ = 26853120.

The previous prime is 51409933. The next prime is 51409993. The reversal of 51409953 is 35990415.

51409953 is a `hidden beast` number, since 514 + 0 + 99 + 53 = 666.

It is not a de Polignac number, because 51409953 - 2⁶ = 51409889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51409933) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33973 + ... + 35453.

It is an arithmetic number, because the mean of its divisors is an integer number (1926600).

Almost surely, 2^51409953 is an apocalyptic number.

It is an amenable number.

51409953 is a deficient number, since it is larger than the sum of its proper divisors (41066847).

51409953 is a wasteful number, since it uses less digits than its factorization.

51409953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542 (or 1539 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 51409953 is about 7170.0734305863. The cubic root of 51409953 is about 371.8339746471.

The spelling of 51409953 in words is "fifty-one million, four hundred nine thousand, nine hundred fifty-three".