45872591 has 4 divisors (see below), whose sum is σ = 47352384. Its totient is φ = 44392800.

The previous prime is 45872573. The next prime is 45872599. The reversal of 45872591 is 19527854.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19527854 = 2 ⋅9763927.

It is a cyclic number.

It is not a de Polignac number, because 45872591 - 2¹⁸ = 45610447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45872599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 739850 + ... + 739911.

It is an arithmetic number, because the mean of its divisors is an integer number (11838096).

Almost surely, 2^45872591 is an apocalyptic number.

45872591 is a deficient number, since it is larger than the sum of its proper divisors (1479793).

45872591 is a wasteful number, since it uses less digits than its factorization.

45872591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479792.

The product of its digits is 100800, while the sum is 41.

The square root of 45872591 is about 6772.9307541123. The cubic root of 45872591 is about 357.9736750198.

The spelling of 45872591 in words is "forty-five million, eight hundred seventy-two thousand, five hundred ninety-one".