45201021 has 16 divisors (see below), whose sum is σ = 61585920. Its totient is φ = 29480240.

The previous prime is 45201001. The next prime is 45201031. The reversal of 45201021 is 12010254.

It is a cyclic number.

It is not a de Polignac number, because 45201021 - 2⁷ = 45200893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45201001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46066 + ... + 47036.

It is an arithmetic number, because the mean of its divisors is an integer number (3849120).

Almost surely, 2^45201021 is an apocalyptic number.

It is an amenable number.

45201021 is a deficient number, since it is larger than the sum of its proper divisors (16384899).

45201021 is a wasteful number, since it uses less digits than its factorization.

45201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 45201021 is about 6723.1704574553. The cubic root of 45201021 is about 356.2181809685.

Adding to 45201021 its reverse (12010254), we get a palindrome (57211275).

It can be divided in two parts, 4 and 5201021, that added together give a palindrome (5201025).

The spelling of 45201021 in words is "forty-five million, two hundred one thousand, twenty-one".