1521132495 has 16 divisors (see below), whose sum is σ = 2561907840. Its totient is φ = 768572064.

The previous prime is 1521132491. The next prime is 1521132497. The reversal of 1521132495 is 5942311251.

It is a happy number.

It is not a de Polignac number, because 1521132495 - 2² = 1521132491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521132491) 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, 2668369 + ... + 2668938.

It is an arithmetic number, because the mean of its divisors is an integer number (160119240).

Almost surely, 2^1521132495 is an apocalyptic number.

1521132495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1521132495 is a deficient number, since it is larger than the sum of its proper divisors (1040775345).

1521132495 is a wasteful number, since it uses less digits than its factorization.

1521132495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5337334.

The product of its digits is 10800, while the sum is 33.

The square root of 1521132495 is about 39001.6986168551. The cubic root of 1521132495 is about 1150.0648974088.

The spelling of 1521132495 in words is "one billion, five hundred twenty-one million, one hundred thirty-two thousand, four hundred ninety-five".