45272745 has 48 divisors (see below), whose sum is σ = 90634752. Its totient is φ = 20476800.

The previous prime is 45272737. The next prime is 45272749. The reversal of 45272745 is 54727254.

It is a happy number.

It is not a de Polignac number, because 45272745 - 2³ = 45272737 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (45272749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31104 + ... + 32526.

It is an arithmetic number, because the mean of its divisors is an integer number (1888224).

Almost surely, 2^45272745 is an apocalyptic number.

45272745 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

45272745 is an abundant number, since it is smaller than the sum of its proper divisors (45362007).

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

45272745 is a wasteful number, since it uses less digits than its factorization.

45272745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542 (or 1539 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 45272745 is about 6728.5024336772. The cubic root of 45272745 is about 356.4064944948.

Adding to 45272745 its reverse (54727254), we get a palindrome (99999999).

The spelling of 45272745 in words is "forty-five million, two hundred seventy-two thousand, seven hundred forty-five".