1553052155 has 4 divisors (see below), whose sum is σ = 1863662592. Its totient is φ = 1242441720.

The previous prime is 1553052091. The next prime is 1553052169. The reversal of 1553052155 is 5512503551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5512503551 = 43 ⋅128197757.

It is not a de Polignac number, because 1553052155 - 2⁶ = 1553052091 is a prime.

It is a Duffinian 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, 155305211 + ... + 155305220.

It is an arithmetic number, because the mean of its divisors is an integer number (465915648).

Almost surely, 2^1553052155 is an apocalyptic number.

1553052155 is a deficient number, since it is larger than the sum of its proper divisors (310610437).

1553052155 is an equidigital number, since it uses as much as digits as its factorization.

1553052155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310610436.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 1553052155 is about 39408.7827140093. The cubic root of 1553052155 is about 1158.0536512042.

The spelling of 1553052155 in words is "one billion, five hundred fifty-three million, fifty-two thousand, one hundred fifty-five".