45491253 has 8 divisors (see below), whose sum is σ = 61945728. Its totient is φ = 29682144.

The previous prime is 45491233. The next prime is 45491267. The reversal of 45491253 is 35219454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45491253 - 2⁶ = 45491189 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45491203) 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, 161176 + ... + 161457.

It is an arithmetic number, because the mean of its divisors is an integer number (7743216).

Almost surely, 2^45491253 is an apocalyptic number.

It is an amenable number.

45491253 is a deficient number, since it is larger than the sum of its proper divisors (16454475).

45491253 is a wasteful number, since it uses less digits than its factorization.

45491253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322683.

The product of its digits is 21600, while the sum is 33.

The square root of 45491253 is about 6744.7203796748. The cubic root of 45491253 is about 356.9789707422.

The spelling of 45491253 in words is "forty-five million, four hundred ninety-one thousand, two hundred fifty-three".