154497983 has 4 divisors (see below), whose sum is σ = 156027768. Its totient is φ = 152968200.

The previous prime is 154497971. The next prime is 154497991. The reversal of 154497983 is 389794451.

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 154497983 - 2⁸ = 154497727 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 (154497953) 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, 764741 + ... + 764942.

It is an arithmetic number, because the mean of its divisors is an integer number (39006942).

Almost surely, 2^154497983 is an apocalyptic number.

154497983 is a deficient number, since it is larger than the sum of its proper divisors (1529785).

154497983 is a wasteful number, since it uses less digits than its factorization.

154497983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529784.

The product of its digits is 1088640, while the sum is 50.

The square root of 154497983 is about 12429.7217587523. The cubic root of 154497983 is about 536.5879776521.

It can be divided in two parts, 15449 and 7983, that added together give a palindrome (23432).

The spelling of 154497983 in words is "one hundred fifty-four million, four hundred ninety-seven thousand, nine hundred eighty-three".