155100455 has 4 divisors (see below), whose sum is σ = 186120552. Its totient is φ = 124080360.

The previous prime is 155100443. The next prime is 155100461. The reversal of 155100455 is 554001551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 554001551 = 43 ⋅12883757.

It is not a de Polignac number, because 155100455 - 2⁸ = 155100199 is a prime.

It is a super-2 number, since 2×155100455² = 48112302282414050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15510041 + ... + 15510050.

It is an arithmetic number, because the mean of its divisors is an integer number (46530138).

Almost surely, 2^155100455 is an apocalyptic number.

155100455 is a deficient number, since it is larger than the sum of its proper divisors (31020097).

155100455 is an equidigital number, since it uses as much as digits as its factorization.

155100455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31020096.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 155100455 is about 12453.9333144192. The cubic root of 155100455 is about 537.2845561656.

The spelling of 155100455 in words is "one hundred fifty-five million, one hundred thousand, four hundred fifty-five".