1057531408 has 20 divisors (see below), whose sum is σ = 2069257068. Its totient is φ = 523529600.

The previous prime is 1057531381. The next prime is 1057531411. The reversal of 1057531408 is 8041357501.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1006665984 + 50865424 = 31728^2 + 7132^2 .

It is a super-2 number, since 2×1057531408² = 2236745357812924928, which contains 22 as substring.

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, 325591 + ... + 328822.

Almost surely, 2^1057531408 is an apocalyptic number.

It is an amenable number.

1057531408 is a deficient number, since it is larger than the sum of its proper divisors (1011725660).

1057531408 is a wasteful number, since it uses less digits than its factorization.

1057531408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654522 (or 654516 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1057531408 is about 32519.7079937689. The cubic root of 1057531408 is about 1018.8206952183.

Adding to 1057531408 its reverse (8041357501), we get a palindrome (9098888909).

The spelling of 1057531408 in words is "one billion, fifty-seven million, five hundred thirty-one thousand, four hundred eight".