49145623 has 4 divisors (see below), whose sum is σ = 52036560. Its totient is φ = 46254688.

The previous prime is 49145587. The next prime is 49145627. The reversal of 49145623 is 32654194.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-49145623 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 (49145627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445443 + ... + 1445476.

It is an arithmetic number, because the mean of its divisors is an integer number (13009140).

Almost surely, 2^49145623 is an apocalyptic number.

49145623 is a deficient number, since it is larger than the sum of its proper divisors (2890937).

49145623 is a wasteful number, since it uses less digits than its factorization.

49145623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890936.

The product of its digits is 25920, while the sum is 34.

The square root of 49145623 is about 7010.3939261642. The cubic root of 49145623 is about 366.2927152593.

The spelling of 49145623 in words is "forty-nine million, one hundred forty-five thousand, six hundred twenty-three".