154402055 has 4 divisors (see below), whose sum is σ = 185282472. Its totient is φ = 123521640.

The previous prime is 154402051. The next prime is 154402063. The reversal of 154402055 is 550204451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550204451 = 19 ⋅28958129.

It is not a de Polignac number, because 154402055 - 2² = 154402051 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 (154402051) 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, 15440201 + ... + 15440210.

It is an arithmetic number, because the mean of its divisors is an integer number (46320618).

Almost surely, 2^154402055 is an apocalyptic number.

154402055 is a deficient number, since it is larger than the sum of its proper divisors (30880417).

154402055 is an equidigital number, since it uses as much as digits as its factorization.

154402055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30880416.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 154402055 is about 12425.8623443204. The cubic root of 154402055 is about 536.4768985999.

The spelling of 154402055 in words is "one hundred fifty-four million, four hundred two thousand, fifty-five".