45665401 has 4 divisors (see below), whose sum is σ = 47240100. Its totient is φ = 44090704.

The previous prime is 45665381. The next prime is 45665407. The reversal of 45665401 is 10456654.

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 33408400 + 12257001 = 5780^2 + 3501^2 .

It is a cyclic number.

It is not a de Polignac number, because 45665401 - 2⁹ = 45664889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45665407) 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, 787306 + ... + 787363.

It is an arithmetic number, because the mean of its divisors is an integer number (11810025).

Almost surely, 2^45665401 is an apocalyptic number.

It is an amenable number.

45665401 is a deficient number, since it is larger than the sum of its proper divisors (1574699).

45665401 is a wasteful number, since it uses less digits than its factorization.

45665401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574698.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 45665401 is about 6757.6179974899. The cubic root of 45665401 is about 357.4339154423.

The spelling of 45665401 in words is "forty-five million, six hundred sixty-five thousand, four hundred one".