45531361 has 4 divisors (see below), whose sum is σ = 46641924. Its totient is φ = 44420800.

The previous prime is 45531359. The next prime is 45531373. The reversal of 45531361 is 16313554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21911761 + 23619600 = 4681^2 + 4860^2 .

It is a cyclic number.

It is not a de Polignac number, because 45531361 - 2¹ = 45531359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45531301) 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, 555220 + ... + 555301.

It is an arithmetic number, because the mean of its divisors is an integer number (11660481).

Almost surely, 2^45531361 is an apocalyptic number.

45531361 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45531361 is a deficient number, since it is larger than the sum of its proper divisors (1110563).

45531361 is a wasteful number, since it uses less digits than its factorization.

45531361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110562.

The product of its digits is 5400, while the sum is 28.

The square root of 45531361 is about 6747.6930131712. The cubic root of 45531361 is about 357.0838517605.

The spelling of 45531361 in words is "forty-five million, five hundred thirty-one thousand, three hundred sixty-one".