49145519 has 2 divisors, whose sum is σ = 49145520. Its totient is φ = 49145518.

The previous prime is 49145513. The next prime is 49145527. The reversal of 49145519 is 91554194.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49145519 - 2¹² = 49141423 is a prime.

It is a super-2 number, since 2×49145519² = 4830564075558722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49145513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24572759 + 24572760.

It is an arithmetic number, because the mean of its divisors is an integer number (24572760).

Almost surely, 2^49145519 is an apocalyptic number.

49145519 is a deficient number, since it is larger than the sum of its proper divisors (1).

49145519 is an equidigital number, since it uses as much as digits as its factorization.

49145519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 38.

The square root of 49145519 is about 7010.3865086028. The cubic root of 49145519 is about 366.2924568812.

The spelling of 49145519 in words is "forty-nine million, one hundred forty-five thousand, five hundred nineteen".