45537331 has 4 divisors (see below), whose sum is σ = 52042672. Its totient is φ = 39031992.

The previous prime is 45537277. The next prime is 45537397. The reversal of 45537331 is 13373554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13373554 = 2 ⋅6686777.

It is a cyclic number.

It is not a de Polignac number, because 45537331 - 2²¹ = 43440179 is a prime.

It is a super-2 number, since 2×45537331² = 4147297029207122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45537293 and 45537302.

It is not an unprimeable number, because it can be changed into a prime (45534331) 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, 3252660 + ... + 3252673.

It is an arithmetic number, because the mean of its divisors is an integer number (13010668).

Almost surely, 2^45537331 is an apocalyptic number.

45537331 is a deficient number, since it is larger than the sum of its proper divisors (6505341).

45537331 is an equidigital number, since it uses as much as digits as its factorization.

45537331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6505340.

The product of its digits is 18900, while the sum is 31.

The square root of 45537331 is about 6748.1353720861. The cubic root of 45537331 is about 357.0994578350.

The spelling of 45537331 in words is "forty-five million, five hundred thirty-seven thousand, three hundred thirty-one".