1557001052 has 24 divisors (see below), whose sum is σ = 2762151840. Its totient is φ = 767873600.

The previous prime is 1557001003. The next prime is 1557001057. The reversal of 1557001052 is 2501007551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557001057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101513 + ... + 115839.

It is an arithmetic number, because the mean of its divisors is an integer number (115089660).

Almost surely, 2^1557001052 is an apocalyptic number.

It is an amenable number.

1557001052 is a deficient number, since it is larger than the sum of its proper divisors (1205150788).

1557001052 is a wasteful number, since it uses less digits than its factorization.

1557001052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14701 (or 14699 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 1557001052 is about 39458.8526442420. The cubic root of 1557001052 is about 1159.0343360525.

The spelling of 1557001052 in words is "one billion, five hundred fifty-seven million, one thousand, fifty-two".