45225391 has 2 divisors, whose sum is σ = 45225392. Its totient is φ = 45225390.

The previous prime is 45225371. The next prime is 45225403. The reversal of 45225391 is 19352254.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45225391 - 2¹³ = 45217199 is a prime.

It is a super-2 number, since 2×45225391² = 4090671982205762, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2730973 and since 45225391 and 2730973 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45225361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22612695 + 22612696.

It is an arithmetic number, because the mean of its divisors is an integer number (22612696).

Almost surely, 2^45225391 is an apocalyptic number.

45225391 is a deficient number, since it is larger than the sum of its proper divisors (1).

45225391 is an equidigital number, since it uses as much as digits as its factorization.

45225391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

The square root of 45225391 is about 6724.9826022080. The cubic root of 45225391 is about 356.2821874683.

The spelling of 45225391 in words is "forty-five million, two hundred twenty-five thousand, three hundred ninety-one".