45405431 has 8 divisors (see below), whose sum is σ = 47066880. Its totient is φ = 43773048.

The previous prime is 45405403. The next prime is 45405439. The reversal of 45405431 is 13450454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45405431 - 2¹⁰ = 45404407 is a prime.

It is a super-2 number, since 2×45405431² = 4123306328591522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45405431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45405439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4061 + ... + 10358.

It is an arithmetic number, because the mean of its divisors is an integer number (5883360).

Almost surely, 2^45405431 is an apocalyptic number.

45405431 is a deficient number, since it is larger than the sum of its proper divisors (1661449).

45405431 is a wasteful number, since it uses less digits than its factorization.

45405431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14533.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 45405431 is about 6738.3552147390. The cubic root of 45405431 is about 356.7543419518.

Adding to 45405431 its reverse (13450454), we get a palindrome (58855885).

The spelling of 45405431 in words is "forty-five million, four hundred five thousand, four hundred thirty-one".