45321090 has 16 divisors (see below), whose sum is σ = 108770688. Its totient is φ = 12085616.

The previous prime is 45321083. The next prime is 45321091. The reversal of 45321090 is 9012354.

It is a self number, because there is not a number n which added to its sum of digits gives 45321090.

It is not an unprimeable number, because it can be changed into a prime (45321091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755322 + ... + 755381.

It is an arithmetic number, because the mean of its divisors is an integer number (6798168).

Almost surely, 2^45321090 is an apocalyptic number.

45321090 is an abundant number, since it is smaller than the sum of its proper divisors (63449598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45321090 is a wasteful number, since it uses less digits than its factorization.

45321090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510713.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 45321090 is about 6732.0940278638. The cubic root of 45321090 is about 356.5333135656.

The spelling of 45321090 in words is "forty-five million, three hundred twenty-one thousand, ninety".