45406631 has 4 divisors (see below), whose sum is σ = 46151064. Its totient is φ = 44662200.

The previous prime is 45406619. The next prime is 45406633. The reversal of 45406631 is 13660454.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13660454 = 2 ⋅6830227.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45406631 is a prime.

It is a super-2 number, since 2×45406631² = 4123524277540322, 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 = 45406594 and 45406603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45406633) 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, 372125 + ... + 372246.

It is an arithmetic number, because the mean of its divisors is an integer number (11537766).

Almost surely, 2^45406631 is an apocalyptic number.

45406631 is a deficient number, since it is larger than the sum of its proper divisors (744433).

45406631 is an equidigital number, since it uses as much as digits as its factorization.

45406631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744432.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 45406631 is about 6738.4442566515. Note that the first 3 decimals coincide. The cubic root of 45406631 is about 356.7574847582.

The spelling of 45406631 in words is "forty-five million, four hundred six thousand, six hundred thirty-one".