52217157 has 8 divisors (see below), whose sum is σ = 70124320. Its totient is φ = 34560720.

The previous prime is 52217147. The next prime is 52217171. The reversal of 52217157 is 75171225.

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

It is not a de Polignac number, because 52217157 - 2⁷ = 52217029 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 (52217147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62194 + ... + 63027.

It is an arithmetic number, because the mean of its divisors is an integer number (8765540).

Almost surely, 2^52217157 is an apocalyptic number.

It is an amenable number.

52217157 is a deficient number, since it is larger than the sum of its proper divisors (17907163).

52217157 is a wasteful number, since it uses less digits than its factorization.

52217157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125363.

The product of its digits is 4900, while the sum is 30.

The square root of 52217157 is about 7226.1439924762. The cubic root of 52217157 is about 373.7699716027.

The spelling of 52217157 in words is "fifty-two million, two hundred seventeen thousand, one hundred fifty-seven".