149717543 has 2 divisors, whose sum is σ = 149717544. Its totient is φ = 149717542.

The previous prime is 149717531. The next prime is 149717593. The reversal of 149717543 is 345717941.

It is a weak prime.

It is an emirp because it is prime and its reverse (345717941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149717543 - 2⁶ = 149717479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149717543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149717593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74858771 + 74858772.

It is an arithmetic number, because the mean of its divisors is an integer number (74858772).

Almost surely, 2^149717543 is an apocalyptic number.

149717543 is a deficient number, since it is larger than the sum of its proper divisors (1).

149717543 is an equidigital number, since it uses as much as digits as its factorization.

149717543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 149717543 is about 12235.9120215863. The cubic root of 149717543 is about 530.9955690902.

The spelling of 149717543 in words is "one hundred forty-nine million, seven hundred seventeen thousand, five hundred forty-three".