154890977 has 4 divisors (see below), whose sum is σ = 154949040. Its totient is φ = 154832916.

The previous prime is 154890971. The next prime is 154890979. The reversal of 154890977 is 779098451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 154890977 - 2¹⁴ = 154874593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154890971) 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, 24827 + ... + 30432.

It is an arithmetic number, because the mean of its divisors is an integer number (38737260).

Almost surely, 2^154890977 is an apocalyptic number.

It is an amenable number.

154890977 is a deficient number, since it is larger than the sum of its proper divisors (58063).

154890977 is an equidigital number, since it uses as much as digits as its factorization.

154890977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58062.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 154890977 is about 12445.5203587476. The cubic root of 154890977 is about 537.0425624593.

The spelling of 154890977 in words is "one hundred fifty-four million, eight hundred ninety thousand, nine hundred seventy-seven".