154022089 has 4 divisors (see below), whose sum is σ = 165869956. Its totient is φ = 142174224.

The previous prime is 154022069. The next prime is 154022093. The reversal of 154022089 is 980220451.

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

It can be written as a sum of positive squares in 2 ways, for example, as 62015625 + 92006464 = 7875^2 + 9592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154022089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154022089.

It is not an unprimeable number, because it can be changed into a prime (154022069) 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, 5923914 + ... + 5923939.

It is an arithmetic number, because the mean of its divisors is an integer number (41467489).

Almost surely, 2^154022089 is an apocalyptic number.

It is an amenable number.

154022089 is a deficient number, since it is larger than the sum of its proper divisors (11847867).

154022089 is a wasteful number, since it uses less digits than its factorization.

154022089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11847866.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 154022089 is about 12410.5636052518. The cubic root of 154022089 is about 536.0364674546.

The spelling of 154022089 in words is "one hundred fifty-four million, twenty-two thousand, eighty-nine".