2513132761 has 4 divisors (see below), whose sum is σ = 2574428724. Its totient is φ = 2451836800.

The previous prime is 2513132749. The next prime is 2513132771. The reversal of 2513132761 is 1672313152.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 371294361 + 2141838400 = 19269^2 + 46280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2513132761 is a prime.

It is a super-2 number, since 2×2513132761² = 12631672548822966242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2513132701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30647920 + ... + 30648001.

It is an arithmetic number, because the mean of its divisors is an integer number (643607181).

Almost surely, 2^2513132761 is an apocalyptic number.

It is an amenable number.

2513132761 is a deficient number, since it is larger than the sum of its proper divisors (61295963).

2513132761 is an equidigital number, since it uses as much as digits as its factorization.

2513132761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61295962.

The product of its digits is 7560, while the sum is 31.

The square root of 2513132761 is about 50131.1555921066. The cubic root of 2513132761 is about 1359.5811788848.

The spelling of 2513132761 in words is "two billion, five hundred thirteen million, one hundred thirty-two thousand, seven hundred sixty-one".