155427553 has 8 divisors (see below), whose sum is σ = 158423040. Its totient is φ = 152460000.

The previous prime is 155427497. The next prime is 155427577. The reversal of 155427553 is 355724551.

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 155427553 - 2¹³ = 155419361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155427593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4428 + ... + 18178.

It is an arithmetic number, because the mean of its divisors is an integer number (19802880).

Almost surely, 2^155427553 is an apocalyptic number.

It is an amenable number.

155427553 is a deficient number, since it is larger than the sum of its proper divisors (2995487).

155427553 is a wasteful number, since it uses less digits than its factorization.

155427553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13967.

The product of its digits is 105000, while the sum is 37.

The square root of 155427553 is about 12467.0587148694. The cubic root of 155427553 is about 537.6619917725.

The spelling of 155427553 in words is "one hundred fifty-five million, four hundred twenty-seven thousand, five hundred fifty-three".