1427365521 has 24 divisors (see below), whose sum is σ = 2141224800. Its totient is φ = 915558336.

The previous prime is 1427365517. The next prime is 1427365523. The reversal of 1427365521 is 1255637241.

1427365521 is a `hidden beast` number, since 1 + 4 + 2 + 73 + 65 + 521 = 666.

It is not a de Polignac number, because 1427365521 - 2² = 1427365517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1427365523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1596 + ... + 53453.

It is an arithmetic number, because the mean of its divisors is an integer number (89217700).

Almost surely, 2^1427365521 is an apocalyptic number.

It is an amenable number.

1427365521 is a deficient number, since it is larger than the sum of its proper divisors (713859279).

1427365521 is a wasteful number, since it uses less digits than its factorization.

1427365521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55165 (or 55162 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 1427365521 is about 37780.4912752600. The cubic root of 1427365521 is about 1125.9308893683.

The spelling of 1427365521 in words is "one billion, four hundred twenty-seven million, three hundred sixty-five thousand, five hundred twenty-one".