154421263 has 4 divisors (see below), whose sum is σ = 154446160. Its totient is φ = 154396368.

The previous prime is 154421257. The next prime is 154421291. The reversal of 154421263 is 362124451.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 362124451 = 13 ⋅27855727.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154421263 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 (154421243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5131 + ... + 18307.

It is an arithmetic number, because the mean of its divisors is an integer number (38611540).

Almost surely, 2^154421263 is an apocalyptic number.

154421263 is a deficient number, since it is larger than the sum of its proper divisors (24897).

154421263 is a wasteful number, since it uses less digits than its factorization.

154421263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24896.

The product of its digits is 5760, while the sum is 28.

The square root of 154421263 is about 12426.6352243880. The cubic root of 154421263 is about 536.4991440313.

The spelling of 154421263 in words is "one hundred fifty-four million, four hundred twenty-one thousand, two hundred sixty-three".