45037281 has 4 divisors (see below), whose sum is σ = 60049712. Its totient is φ = 30024852.

The previous prime is 45037271. The next prime is 45037283. The reversal of 45037281 is 18273054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 45037281 - 2⁵ = 45037249 is a prime.

It is a super-2 number, since 2×45037281² = 4056713359745922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45037283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7506211 + ... + 7506216.

It is an arithmetic number, because the mean of its divisors is an integer number (15012428).

Almost surely, 2^45037281 is an apocalyptic number.

It is an amenable number.

45037281 is a deficient number, since it is larger than the sum of its proper divisors (15012431).

45037281 is a wasteful number, since it uses less digits than its factorization.

45037281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15012430.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 45037281 is about 6710.9821188854. The cubic root of 45037281 is about 355.7875289206.

The spelling of 45037281 in words is "forty-five million, thirty-seven thousand, two hundred eighty-one".