155057455 has 8 divisors (see below), whose sum is σ = 212650272. Its totient is φ = 106325088.

The previous prime is 155057431. The next prime is 155057473. The reversal of 155057455 is 554750551.

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 155057455 - 2⁷ = 155057327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2215072 + ... + 2215141.

It is an arithmetic number, because the mean of its divisors is an integer number (26581284).

Almost surely, 2^155057455 is an apocalyptic number.

155057455 is a deficient number, since it is larger than the sum of its proper divisors (57592817).

155057455 is an equidigital number, since it uses as much as digits as its factorization.

155057455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430225.

The product of its (nonzero) digits is 87500, while the sum is 37.

The square root of 155057455 is about 12452.2068325257. The cubic root of 155057455 is about 537.2348993775.

The spelling of 155057455 in words is "one hundred fifty-five million, fifty-seven thousand, four hundred fifty-five".