53408917251 has 12 divisors (see below), whose sum is σ = 80500397328. Its totient is φ = 34057860144.

The previous prime is 53408917223. The next prime is 53408917259. The reversal of 53408917251 is 15271980435.

53408917251 is a `hidden beast` number, since 534 + 0 + 8 + 91 + 7 + 25 + 1 = 666.

It is not a de Polignac number, because 53408917251 - 2⁷ = 53408917123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53408917197 and 53408917206.

It is not an unprimeable number, because it can be changed into a prime (53408917259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129006840 + ... + 129007253.

It is an arithmetic number, because the mean of its divisors is an integer number (6708366444).

Almost surely, 2^53408917251 is an apocalyptic number.

53408917251 is a deficient number, since it is larger than the sum of its proper divisors (27091480077).

53408917251 is a wasteful number, since it uses less digits than its factorization.

53408917251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258014122 (or 258014119 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 53408917251 in words is "fifty-three billion, four hundred eight million, nine hundred seventeen thousand, two hundred fifty-one".