45242391 has 4 divisors (see below), whose sum is σ = 60323192. Its totient is φ = 30161592.

The previous prime is 45242383. The next prime is 45242399. The reversal of 45242391 is 19324254.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (45242383) and next prime (45242399).

It is not a de Polignac number, because 45242391 - 2³ = 45242383 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 (45242399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7540396 + ... + 7540401.

It is an arithmetic number, because the mean of its divisors is an integer number (15080798).

Almost surely, 2^45242391 is an apocalyptic number.

45242391 is a deficient number, since it is larger than the sum of its proper divisors (15080801).

45242391 is a wasteful number, since it uses less digits than its factorization.

45242391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15080800.

The product of its digits is 8640, while the sum is 30.

The square root of 45242391 is about 6726.2464272431. The cubic root of 45242391 is about 356.3268234445.

The spelling of 45242391 in words is "forty-five million, two hundred forty-two thousand, three hundred ninety-one".