155457105 has 8 divisors (see below), whose sum is σ = 248731392. Its totient is φ = 82910448.

The previous prime is 155457073. The next prime is 155457131. The reversal of 155457105 is 501754551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155457105 - 2⁵ = 155457073 is a prime.

It is a super-2 number, since 2×155457105² = 48333822989962050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5181889 + ... + 5181918.

It is an arithmetic number, because the mean of its divisors is an integer number (31091424).

Almost surely, 2^155457105 is an apocalyptic number.

155457105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155457105 is a deficient number, since it is larger than the sum of its proper divisors (93274287).

155457105 is a wasteful number, since it uses less digits than its factorization.

155457105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10363815.

The product of its (nonzero) digits is 17500, while the sum is 33.

The square root of 155457105 is about 12468.2438619077. The cubic root of 155457105 is about 537.6960654829.

The spelling of 155457105 in words is "one hundred fifty-five million, four hundred fifty-seven thousand, one hundred five".