1047478521 has 16 divisors (see below), whose sum is σ = 1447623360. Its totient is φ = 672920640.

The previous prime is 1047478517. The next prime is 1047478543. The reversal of 1047478521 is 1258747401.

It is not a de Polignac number, because 1047478521 - 2² = 1047478517 is a prime.

It is a super-2 number, since 2×1047478521² = 2194422503912694882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1047478521.

It is not an unprimeable number, because it can be changed into a prime (1047458521) 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, 33991 + ... + 57011.

It is an arithmetic number, because the mean of its divisors is an integer number (90476460).

Almost surely, 2^1047478521 is an apocalyptic number.

It is an amenable number.

1047478521 is a deficient number, since it is larger than the sum of its proper divisors (400144839).

1047478521 is a wasteful number, since it uses less digits than its factorization.

1047478521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23576.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 1047478521 is about 32364.7728402348. The cubic root of 1047478521 is about 1015.5821103794.

The spelling of 1047478521 in words is "one billion, forty-seven million, four hundred seventy-eight thousand, five hundred twenty-one".