152661657 has 4 divisors (see below), whose sum is σ = 203548880. Its totient is φ = 101774436.

The previous prime is 152661643. The next prime is 152661659. The reversal of 152661657 is 756166251.

152661657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 756166251 = 3 ⋅252055417.

It is not a de Polignac number, because 152661657 - 2⁸ = 152661401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152661659) 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, 25443607 + ... + 25443612.

It is an arithmetic number, because the mean of its divisors is an integer number (50887220).

Almost surely, 2^152661657 is an apocalyptic number.

It is an amenable number.

152661657 is a deficient number, since it is larger than the sum of its proper divisors (50887223).

152661657 is an equidigital number, since it uses as much as digits as its factorization.

152661657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50887222.

The product of its digits is 75600, while the sum is 39.

The square root of 152661657 is about 12355.6326021778. The cubic root of 152661657 is about 534.4535801681.

The spelling of 152661657 in words is "one hundred fifty-two million, six hundred sixty-one thousand, six hundred fifty-seven".