47157617 has 8 divisors (see below), whose sum is σ = 51310056. Its totient is φ = 43080192.

The previous prime is 47157611. The next prime is 47157631. The reversal of 47157617 is 71675174.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 152881 + 47004736 = 391^2 + 6856^2 .

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 47157617 - 2⁶ = 47157553 is a prime.

It is a super-2 number, since 2×47157617² = 4447681682237378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47157611) 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, 17438 + ... + 19959.

It is an arithmetic number, because the mean of its divisors is an integer number (6413757).

Almost surely, 2^47157617 is an apocalyptic number.

It is an amenable number.

47157617 is a deficient number, since it is larger than the sum of its proper divisors (4152439).

47157617 is a wasteful number, since it uses less digits than its factorization.

47157617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37507.

The product of its digits is 41160, while the sum is 38.

The square root of 47157617 is about 6867.1403801000. The cubic root of 47157617 is about 361.2855709038.

It can be divided in two parts, 47157 and 617, that added together give a palindrome (47774).

The spelling of 47157617 in words is "forty-seven million, one hundred fifty-seven thousand, six hundred seventeen".