158552657 has 8 divisors (see below), whose sum is σ = 164206440. Its totient is φ = 152911360.

The previous prime is 158552633. The next prime is 158552671. The reversal of 158552657 is 756255851.

It can be written as a sum of positive squares in 4 ways, for example, as 43612816 + 114939841 = 6604^2 + 10721^2 .

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 158552657 - 2¹² = 158548561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158552677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28193 + ... + 33345.

It is an arithmetic number, because the mean of its divisors is an integer number (20525805).

Almost surely, 2^158552657 is an apocalyptic number.

It is an amenable number.

158552657 is a deficient number, since it is larger than the sum of its proper divisors (5653783).

158552657 is a wasteful number, since it uses less digits than its factorization.

158552657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6243.

The product of its digits is 420000, while the sum is 44.

The square root of 158552657 is about 12591.7694149790. The cubic root of 158552657 is about 541.2416068975.

The spelling of 158552657 in words is "one hundred fifty-eight million, five hundred fifty-two thousand, six hundred fifty-seven".