45661261 has 4 divisors (see below), whose sum is σ = 45676224. Its totient is φ = 45646300.

The previous prime is 45661247. The next prime is 45661267. The reversal of 45661261 is 16216654.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45661261 is a prime.

It is a super-2 number, since 2×45661261² = 4169901512220242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45661267) 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, 1075 + ... + 9616.

It is an arithmetic number, because the mean of its divisors is an integer number (11419056).

Almost surely, 2^45661261 is an apocalyptic number.

It is an amenable number.

45661261 is a deficient number, since it is larger than the sum of its proper divisors (14963).

45661261 is a wasteful number, since it uses less digits than its factorization.

45661261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14962.

The product of its digits is 8640, while the sum is 31.

The square root of 45661261 is about 6757.3116695917. The cubic root of 45661261 is about 357.4231135288.

The spelling of 45661261 in words is "forty-five million, six hundred sixty-one thousand, two hundred sixty-one".