45211839 has 4 divisors (see below), whose sum is σ = 60282456. Its totient is φ = 30141224.

The previous prime is 45211787. The next prime is 45211867. The reversal of 45211839 is 93811254.

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

It is a cyclic number.

It is not a de Polignac number, because 45211839 - 2⁷ = 45211711 is a prime.

It is a super-2 number, since 2×45211839² = 4088220771523842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45211879) 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, 7535304 + ... + 7535309.

It is an arithmetic number, because the mean of its divisors is an integer number (15070614).

Almost surely, 2^45211839 is an apocalyptic number.

45211839 is a deficient number, since it is larger than the sum of its proper divisors (15070617).

45211839 is a wasteful number, since it uses less digits than its factorization.

45211839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15070616.

The product of its digits is 8640, while the sum is 33.

The square root of 45211839 is about 6723.9749404649. The cubic root of 45211839 is about 356.2465967049.

The spelling of 45211839 in words is "forty-five million, two hundred eleven thousand, eight hundred thirty-nine".