45621545 has 4 divisors (see below), whose sum is σ = 54745860. Its totient is φ = 36497232.

The previous prime is 45621539. The next prime is 45621617. The reversal of 45621545 is 54512654.

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 15272464 + 30349081 = 3908^2 + 5509^2 .

It is a cyclic number.

It is not a de Polignac number, because 45621545 - 2¹⁸ = 45359401 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4562150 + ... + 4562159.

It is an arithmetic number, because the mean of its divisors is an integer number (13686465).

Almost surely, 2^45621545 is an apocalyptic number.

It is an amenable number.

45621545 is a deficient number, since it is larger than the sum of its proper divisors (9124315).

45621545 is an equidigital number, since it uses as much as digits as its factorization.

45621545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9124314.

The product of its digits is 24000, while the sum is 32.

The square root of 45621545 is about 6754.3722876371. The cubic root of 45621545 is about 357.3194550244.

The spelling of 45621545 in words is "forty-five million, six hundred twenty-one thousand, five hundred forty-five".