1577981552 has 20 divisors (see below), whose sum is σ = 3494102256. Its totient is φ = 676277760.

The previous prime is 1577981543. The next prime is 1577981569. The reversal of 1577981552 is 2551897751.

It is a self number, because there is not a number n which added to its sum of digits gives 1577981552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7044449 + ... + 7044672.

Almost surely, 2^1577981552 is an apocalyptic number.

It is an amenable number.

1577981552 is an abundant number, since it is smaller than the sum of its proper divisors (1916120704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1577981552 is a wasteful number, since it uses less digits than its factorization.

1577981552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14089136 (or 14089130 counting only the distinct ones).

The product of its digits is 882000, while the sum is 50.

The square root of 1577981552 is about 39723.8159294900. The cubic root of 1577981552 is about 1164.2170999111.

The spelling of 1577981552 in words is "one billion, five hundred seventy-seven million, nine hundred eighty-one thousand, five hundred fifty-two".