155052557 has 8 divisors (see below), whose sum is σ = 169345632. Its totient is φ = 140792400.

The previous prime is 155052553. The next prime is 155052581. The reversal of 155052557 is 755250551.

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 155052557 - 2² = 155052553 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 (155052551) 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, 2207 + ... + 17747.

It is an arithmetic number, because the mean of its divisors is an integer number (21168204).

Almost surely, 2^155052557 is an apocalyptic number.

It is an amenable number.

155052557 is a deficient number, since it is larger than the sum of its proper divisors (14293075).

155052557 is a wasteful number, since it uses less digits than its factorization.

155052557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16459.

The product of its (nonzero) digits is 43750, while the sum is 35.

The square root of 155052557 is about 12452.0101590065. The cubic root of 155052557 is about 537.2292425405.

The spelling of 155052557 in words is "one hundred fifty-five million, fifty-two thousand, five hundred fifty-seven".