155042054 has 4 divisors (see below), whose sum is σ = 232563084. Its totient is φ = 77521026.

The previous prime is 155042051. The next prime is 155042059. The reversal of 155042054 is 450240551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450240551 = 727 ⋅619313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155042051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38760512 + ... + 38760515.

It is an arithmetic number, because the mean of its divisors is an integer number (58140771).

Almost surely, 2^155042054 is an apocalyptic number.

155042054 is a deficient number, since it is larger than the sum of its proper divisors (77521030).

155042054 is an equidigital number, since it uses as much as digits as its factorization.

155042054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77521029.

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

The square root of 155042054 is about 12451.5884127287. The cubic root of 155042054 is about 537.2171119308.

The spelling of 155042054 in words is "one hundred fifty-five million, forty-two thousand, fifty-four".