251630053 has 8 divisors (see below), whose sum is σ = 266961920. Its totient is φ = 236507040.

The previous prime is 251630033. The next prime is 251630059. The reversal of 251630053 is 350036152.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 251630053 - 2⁹ = 251629541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251630059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49728 + ... + 54553.

It is an arithmetic number, because the mean of its divisors is an integer number (33370240).

Almost surely, 2^251630053 is an apocalyptic number.

It is an amenable number.

251630053 is a deficient number, since it is larger than the sum of its proper divisors (15331867).

251630053 is a wasteful number, since it uses less digits than its factorization.

251630053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104427.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 251630053 is about 15862.8513515068. The cubic root of 251630053 is about 631.3267186696.

The spelling of 251630053 in words is "two hundred fifty-one million, six hundred thirty thousand, fifty-three".