45405401 has 4 divisors (see below), whose sum is σ = 46632612. Its totient is φ = 44178192.

The previous prime is 45405391. The next prime is 45405403. The reversal of 45405401 is 10450454.

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 42237001 + 3168400 = 6499^2 + 1780^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45405401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45405403) 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, 613550 + ... + 613623.

It is an arithmetic number, because the mean of its divisors is an integer number (11658153).

Almost surely, 2^45405401 is an apocalyptic number.

It is an amenable number.

45405401 is a deficient number, since it is larger than the sum of its proper divisors (1227211).

45405401 is a wasteful number, since it uses less digits than its factorization.

45405401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227210.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 45405401 is about 6738.3529886761. The cubic root of 45405401 is about 356.7542633809.

Adding to 45405401 its reverse (10450454), we get a palindrome (55855855).

The spelling of 45405401 in words is "forty-five million, four hundred five thousand, four hundred one".