45219631 has 8 divisors (see below), whose sum is σ = 46267760. Its totient is φ = 44183232.

The previous prime is 45219599. The next prime is 45219637. The reversal of 45219631 is 13691254.

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 45219631 - 2⁵ = 45219599 is a prime.

It is a super-2 number, since 2×45219631² = 4089630055552322, 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 = 45219593 and 45219602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45219637) 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, 5116 + ... + 10798.

It is an arithmetic number, because the mean of its divisors is an integer number (5783470).

Almost surely, 2^45219631 is an apocalyptic number.

45219631 is a deficient number, since it is larger than the sum of its proper divisors (1048129).

45219631 is a wasteful number, since it uses less digits than its factorization.

45219631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865.

The product of its digits is 6480, while the sum is 31.

The square root of 45219631 is about 6724.5543346753. The cubic root of 45219631 is about 356.2670612122.

The spelling of 45219631 in words is "forty-five million, two hundred nineteen thousand, six hundred thirty-one".