45249331 has 4 divisors (see below), whose sum is σ = 45268912. Its totient is φ = 45229752.

The previous prime is 45249329. The next prime is 45249341. The reversal of 45249331 is 13394254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13394254 = 2 ⋅6697127.

It is a cyclic number.

It is not a de Polignac number, because 45249331 - 2¹ = 45249329 is a prime.

It is a super-2 number, since 2×45249331² = 4095003911895122, 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 = 45249293 and 45249302.

It is not an unprimeable number, because it can be changed into a prime (45249311) 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, 5775 + ... + 11128.

It is an arithmetic number, because the mean of its divisors is an integer number (11317228).

Almost surely, 2^45249331 is an apocalyptic number.

45249331 is a deficient number, since it is larger than the sum of its proper divisors (19581).

45249331 is a wasteful number, since it uses less digits than its factorization.

45249331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19580.

The product of its digits is 12960, while the sum is 31.

The square root of 45249331 is about 6726.7622969747. The cubic root of 45249331 is about 356.3450422114.

The spelling of 45249331 in words is "forty-five million, two hundred forty-nine thousand, three hundred thirty-one".