45138551 has 2 divisors, whose sum is σ = 45138552. Its totient is φ = 45138550.

The previous prime is 45138497. The next prime is 45138559. The reversal of 45138551 is 15583154.

45138551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45138551 - 2²² = 40944247 is a prime.

It is a Chen prime.

It is equal to p_2726069 and since 45138551 and 2726069 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 (45138559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22569275 + 22569276.

It is an arithmetic number, because the mean of its divisors is an integer number (22569276).

Almost surely, 2^45138551 is an apocalyptic number.

45138551 is a deficient number, since it is larger than the sum of its proper divisors (1).

45138551 is an equidigital number, since it uses as much as digits as its factorization.

45138551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 32.

The square root of 45138551 is about 6718.5229775599. The cubic root of 45138551 is about 356.0540017184.

The spelling of 45138551 in words is "forty-five million, one hundred thirty-eight thousand, five hundred fifty-one".