657248053 has 8 divisors (see below), whose sum is σ = 819426240. Its totient is φ = 512141280.

The previous prime is 657248029. The next prime is 657248063. The reversal of 657248053 is 350842756.

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

It is not a de Polignac number, because 657248053 - 2⁵ = 657248021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 657247997 and 657248015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657248003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4267768 + ... + 4267921.

It is an arithmetic number, because the mean of its divisors is an integer number (102428280).

Almost surely, 2^657248053 is an apocalyptic number.

It is an amenable number.

657248053 is a deficient number, since it is larger than the sum of its proper divisors (162178187).

657248053 is a wasteful number, since it uses less digits than its factorization.

657248053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8535707.

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 657248053 is about 25636.8495139321. The cubic root of 657248053 is about 869.4469788817.

The spelling of 657248053 in words is "six hundred fifty-seven million, two hundred forty-eight thousand, fifty-three".