1047477557 has 6 divisors (see below), whose sum is σ = 1218494358. Its totient is φ = 897837864.

The previous prime is 1047477551. The next prime is 1047477577. The reversal of 1047477557 is 7557747401.

It can be written as a sum of positive squares in only one way, i.e., 558802321 + 488675236 = 23639^2 + 22106^2 .

It is not a de Polignac number, because 1047477557 - 2¹² = 1047473461 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 (1047477551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10688498 + ... + 10688595.

It is an arithmetic number, because the mean of its divisors is an integer number (203082393).

Almost surely, 2^1047477557 is an apocalyptic number.

It is an amenable number.

1047477557 is a deficient number, since it is larger than the sum of its proper divisors (171016801).

1047477557 is an equidigital number, since it uses as much as digits as its factorization.

1047477557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21377107 (or 21377100 counting only the distinct ones).

The product of its (nonzero) digits is 960400, while the sum is 47.

The square root of 1047477557 is about 32364.7579474959. The cubic root of 1047477557 is about 1015.5817988308.

The spelling of 1047477557 in words is "one billion, forty-seven million, four hundred seventy-seven thousand, five hundred fifty-seven".