1555053423 has 32 divisors (see below), whose sum is σ = 2721085440. Its totient is φ = 765300960.

The previous prime is 1555053413. The next prime is 1555053509. The reversal of 1555053423 is 3243505551.

It is a happy number.

It is not a de Polignac number, because 1555053423 - 2⁴ = 1555053407 is a prime.

It is a super-2 number, since 2×1555053423² = 4836382296768033858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1555053413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172765 + ... + 181542.

It is an arithmetic number, because the mean of its divisors is an integer number (85033920).

Almost surely, 2^1555053423 is an apocalyptic number.

1555053423 is a deficient number, since it is larger than the sum of its proper divisors (1166032017).

1555053423 is a wasteful number, since it uses less digits than its factorization.

1555053423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354347.

The product of its (nonzero) digits is 45000, while the sum is 33.

The square root of 1555053423 is about 39434.1656815508. The cubic root of 1555053423 is about 1158.5508615824.

Adding to 1555053423 its reverse (3243505551), we get a palindrome (4798558974).

The spelling of 1555053423 in words is "one billion, five hundred fifty-five million, fifty-three thousand, four hundred twenty-three".