1557652213 has 12 divisors (see below), whose sum is σ = 1687804608. Its totient is φ = 1436881680.

The previous prime is 1557652189. The next prime is 1557652237. The reversal of 1557652213 is 3122567551.

It is an interprime number because it is at equal distance from previous prime (1557652189) and next prime (1557652237).

It is not a de Polignac number, because 1557652213 - 2²⁹ = 1020781301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1557652913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 465958 + ... + 469288.

It is an arithmetic number, because the mean of its divisors is an integer number (140650384).

Almost surely, 2^1557652213 is an apocalyptic number.

1557652213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1557652213 is a deficient number, since it is larger than the sum of its proper divisors (130152395).

1557652213 is a wasteful number, since it uses less digits than its factorization.

1557652213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124 (or 6111 counting only the distinct ones).

The product of its digits is 63000, while the sum is 37.

The square root of 1557652213 is about 39467.1029212938. The cubic root of 1557652213 is about 1159.1958886666.

The spelling of 1557652213 in words is "one billion, five hundred fifty-seven million, six hundred fifty-two thousand, two hundred thirteen".