53323157 has 4 divisors (see below), whose sum is σ = 53730336. Its totient is φ = 52915980.

The previous prime is 53323147. The next prime is 53323159. The reversal of 53323157 is 75132335.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53323157 - 2⁶ = 53323093 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 (53323159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203393 + ... + 203654.

It is an arithmetic number, because the mean of its divisors is an integer number (13432584).

Almost surely, 2^53323157 is an apocalyptic number.

It is an amenable number.

53323157 is a deficient number, since it is larger than the sum of its proper divisors (407179).

53323157 is a wasteful number, since it uses less digits than its factorization.

53323157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407178.

The product of its digits is 9450, while the sum is 29.

The square root of 53323157 is about 7302.2706742492. The cubic root of 53323157 is about 376.3904692888.

The spelling of 53323157 in words is "fifty-three million, three hundred twenty-three thousand, one hundred fifty-seven".