1557253475 has 6 divisors (see below), whose sum is σ = 1930994340. Its totient is φ = 1245802760.

The previous prime is 1557253421. The next prime is 1557253501. The reversal of 1557253475 is 5743527551.

It is not a de Polignac number, because 1557253475 - 2⁸ = 1557253219 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31145045 + ... + 31145094.

It is an arithmetic number, because the mean of its divisors is an integer number (321832390).

Almost surely, 2^1557253475 is an apocalyptic number.

1557253475 is a deficient number, since it is larger than the sum of its proper divisors (373740865).

1557253475 is an equidigital number, since it uses as much as digits as its factorization.

1557253475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62290149 (or 62290144 counting only the distinct ones).

The product of its digits is 735000, while the sum is 44.

The square root of 1557253475 is about 39462.0510744183. The cubic root of 1557253475 is about 1159.0969673771.

The spelling of 1557253475 in words is "one billion, five hundred fifty-seven million, two hundred fifty-three thousand, four hundred seventy-five".