53215157 has 4 divisors (see below), whose sum is σ = 53417760. Its totient is φ = 53012556.

The previous prime is 53215153. The next prime is 53215163. The reversal of 53215157 is 75151235.

It is a happy number.

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 53215157 - 2² = 53215153 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 (53215153) 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 3 ways as a sum of consecutive naturals, for example, 100907 + ... + 101432.

It is an arithmetic number, because the mean of its divisors is an integer number (13354440).

Almost surely, 2^53215157 is an apocalyptic number.

It is an amenable number.

53215157 is a deficient number, since it is larger than the sum of its proper divisors (202603).

53215157 is a wasteful number, since it uses less digits than its factorization.

53215157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202602.

The product of its digits is 5250, while the sum is 29.

The square root of 53215157 is about 7294.8719659772. The cubic root of 53215157 is about 376.1361854842.

The spelling of 53215157 in words is "fifty-three million, two hundred fifteen thousand, one hundred fifty-seven".