45815961 has 4 divisors (see below), whose sum is σ = 61087952. Its totient is φ = 30543972.

The previous prime is 45815947. The next prime is 45815981. The reversal of 45815961 is 16951854.

45815961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 45815961 - 2⁹ = 45815449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45815981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7635991 + ... + 7635996.

It is an arithmetic number, because the mean of its divisors is an integer number (15271988).

Almost surely, 2^45815961 is an apocalyptic number.

It is an amenable number.

45815961 is a deficient number, since it is larger than the sum of its proper divisors (15271991).

45815961 is a wasteful number, since it uses less digits than its factorization.

45815961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15271990.

The product of its digits is 43200, while the sum is 39.

The square root of 45815961 is about 6768.7488504154. The cubic root of 45815961 is about 357.8263074489.

The spelling of 45815961 in words is "forty-five million, eight hundred fifteen thousand, nine hundred sixty-one".