45194431 has 2 divisors, whose sum is σ = 45194432. Its totient is φ = 45194430.

The previous prime is 45194393. The next prime is 45194437. The reversal of 45194431 is 13449154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45194431 - 2¹⁵ = 45161663 is a prime.

It is a super-2 number, since 2×45194431² = 4085073186827522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45194393 and 45194402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45194437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22597215 + 22597216.

It is an arithmetic number, because the mean of its divisors is an integer number (22597216).

Almost surely, 2^45194431 is an apocalyptic number.

45194431 is a deficient number, since it is larger than the sum of its proper divisors (1).

45194431 is an equidigital number, since it uses as much as digits as its factorization.

45194431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 45194431 is about 6722.6803434345. The cubic root of 45194431 is about 356.2008687349.

The spelling of 45194431 in words is "forty-five million, one hundred ninety-four thousand, four hundred thirty-one".