1161520475 has 12 divisors (see below), whose sum is σ = 1442060976. Its totient is φ = 928070880.

The previous prime is 1161520463. The next prime is 1161520501. The reversal of 1161520475 is 5740251611.

It is not a de Polignac number, because 1161520475 - 2⁸ = 1161520219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7652 + ... + 48801.

It is an arithmetic number, because the mean of its divisors is an integer number (120171748).

Almost surely, 2^1161520475 is an apocalyptic number.

1161520475 is a deficient number, since it is larger than the sum of its proper divisors (280540501).

1161520475 is an equidigital number, since it uses as much as digits as its factorization.

1161520475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57286 (or 57281 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1161520475 is about 34081.0867637756. The cubic root of 1161520475 is about 1051.1764515951.

The spelling of 1161520475 in words is "one billion, one hundred sixty-one million, five hundred twenty thousand, four hundred seventy-five".