1557602453 has 4 divisors (see below), whose sum is σ = 1699202688. Its totient is φ = 1416002220.

The previous prime is 1557602413. The next prime is 1557602461. The reversal of 1557602453 is 3542067551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1557602453 - 2¹⁰ = 1557601429 is a prime.

It is a super-2 number, since 2×1557602453² = 4852250803183234418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557602413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70800101 + ... + 70800122.

It is an arithmetic number, because the mean of its divisors is an integer number (424800672).

Almost surely, 2^1557602453 is an apocalyptic number.

It is an amenable number.

1557602453 is a deficient number, since it is larger than the sum of its proper divisors (141600235).

1557602453 is a wasteful number, since it uses less digits than its factorization.

1557602453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141600234.

The product of its (nonzero) digits is 126000, while the sum is 38.

The square root of 1557602453 is about 39466.4725178220. The cubic root of 1557602453 is about 1159.1835448324.

The spelling of 1557602453 in words is "one billion, five hundred fifty-seven million, six hundred two thousand, four hundred fifty-three".