158055557 has 4 divisors (see below), whose sum is σ = 172424256. Its totient is φ = 143686860.

The previous prime is 158055553. The next prime is 158055589. The reversal of 158055557 is 755550851.

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 158055557 - 2² = 158055553 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 (158055553) 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, 7184333 + ... + 7184354.

It is an arithmetic number, because the mean of its divisors is an integer number (43106064).

Almost surely, 2^158055557 is an apocalyptic number.

It is an amenable number.

158055557 is a deficient number, since it is larger than the sum of its proper divisors (14368699).

158055557 is a wasteful number, since it uses less digits than its factorization.

158055557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14368698.

The product of its (nonzero) digits is 175000, while the sum is 41.

The square root of 158055557 is about 12572.0148345442. The cubic root of 158055557 is about 540.6753746683.

The spelling of 158055557 in words is "one hundred fifty-eight million, fifty-five thousand, five hundred fifty-seven".