1553052231 has 32 divisors (see below), whose sum is σ = 2352896000. Its totient is φ = 1012194144.

The previous prime is 1553052227. The next prime is 1553052247. The reversal of 1553052231 is 1322503551.

It is a happy number.

It is not a de Polignac number, because 1553052231 - 2² = 1553052227 is a prime.

It is a super-2 number, since 2×1553052231² = 4823942464428154722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1553052195 and 1553052204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553052271) 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, 216165 + ... + 223233.

It is an arithmetic number, because the mean of its divisors is an integer number (73528000).

Almost surely, 2^1553052231 is an apocalyptic number.

1553052231 is a deficient number, since it is larger than the sum of its proper divisors (799843769).

1553052231 is a wasteful number, since it uses less digits than its factorization.

1553052231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7260 (or 7254 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 1553052231 is about 39408.7836782614. The cubic root of 1553052231 is about 1158.0536700943.

Adding to 1553052231 its reverse (1322503551), we get a palindrome (2875555782).

The spelling of 1553052231 in words is "one billion, five hundred fifty-three million, fifty-two thousand, two hundred thirty-one".