45021641 has 24 divisors (see below), whose sum is σ = 54763776. Its totient is φ = 36862560.

The previous prime is 45021617. The next prime is 45021643. The reversal of 45021641 is 14612054.

It is not a de Polignac number, because 45021641 - 2¹⁰ = 45020617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45021643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162395 + ... + 162671.

It is an arithmetic number, because the mean of its divisors is an integer number (2281824).

Almost surely, 2^45021641 is an apocalyptic number.

It is an amenable number.

45021641 is a deficient number, since it is larger than the sum of its proper divisors (9742135).

45021641 is a wasteful number, since it uses less digits than its factorization.

45021641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 45021641 is about 6709.8167635190. The cubic root of 45021641 is about 355.7463396282.

Adding to 45021641 its reverse (14612054), we get a palindrome (59633695).

The spelling of 45021641 in words is "forty-five million, twenty-one thousand, six hundred forty-one".