45961813 has 4 divisors (see below), whose sum is σ = 46159308. Its totient is φ = 45764320.

The previous prime is 45961787. The next prime is 45961819. The reversal of 45961813 is 31816954.

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 12124324 + 33837489 = 3482^2 + 5817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45961813 is a prime.

It is a super-2 number, since 2×45961813² = 4224976508493938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45961819) 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, 98398 + ... + 98863.

It is an arithmetic number, because the mean of its divisors is an integer number (11539827).

Almost surely, 2^45961813 is an apocalyptic number.

It is an amenable number.

45961813 is a deficient number, since it is larger than the sum of its proper divisors (197495).

45961813 is a wasteful number, since it uses less digits than its factorization.

45961813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197494.

The product of its digits is 25920, while the sum is 37.

The square root of 45961813 is about 6779.5142156352. The cubic root of 45961813 is about 358.2056104867.

The spelling of 45961813 in words is "forty-five million, nine hundred sixty-one thousand, eight hundred thirteen".