251680053 has 16 divisors (see below), whose sum is σ = 370763136. Its totient is φ = 151050240.

The previous prime is 251680049. The next prime is 251680069. The reversal of 251680053 is 350086152.

It is not a de Polignac number, because 251680053 - 2² = 251680049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251680053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251680003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106108 + ... + 108453.

It is an arithmetic number, because the mean of its divisors is an integer number (23172696).

Almost surely, 2^251680053 is an apocalyptic number.

251680053 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

251680053 is a deficient number, since it is larger than the sum of its proper divisors (119083083).

251680053 is a wasteful number, since it uses less digits than its factorization.

251680053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214604.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 251680053 is about 15864.4272824455. The cubic root of 251680053 is about 631.3685317003.

The spelling of 251680053 in words is "two hundred fifty-one million, six hundred eighty thousand, fifty-three".