1552393857 has 16 divisors (see below), whose sum is σ = 2366151680. Its totient is φ = 886857552.

The previous prime is 1552393853. The next prime is 1552393861. The reversal of 1552393857 is 7583932551.

It is an interprime number because it is at equal distance from previous prime (1552393853) and next prime (1552393861).

It is not a de Polignac number, because 1552393857 - 2² = 1552393853 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1552393853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112308 + ... + 125370.

It is an arithmetic number, because the mean of its divisors is an integer number (147884480).

Almost surely, 2^1552393857 is an apocalyptic number.

It is an amenable number.

1552393857 is a deficient number, since it is larger than the sum of its proper divisors (813757823).

1552393857 is a wasteful number, since it uses less digits than its factorization.

1552393857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18732.

The product of its digits is 1134000, while the sum is 48.

The square root of 1552393857 is about 39400.4296550177. The cubic root of 1552393857 is about 1157.8900052425.

The spelling of 1552393857 in words is "one billion, five hundred fifty-two million, three hundred ninety-three thousand, eight hundred fifty-seven".