154900987 has 4 divisors (see below), whose sum is σ = 155259160. Its totient is φ = 154542816.

The previous prime is 154900931. The next prime is 154900997. The reversal of 154900987 is 789009451.

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 154900987 - 2⁷ = 154900859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154900997) 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, 178437 + ... + 179302.

It is an arithmetic number, because the mean of its divisors is an integer number (38814790).

Almost surely, 2^154900987 is an apocalyptic number.

154900987 is a deficient number, since it is larger than the sum of its proper divisors (358173).

154900987 is an equidigital number, since it uses as much as digits as its factorization.

154900987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358172.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 154900987 is about 12445.9225049813. The cubic root of 154900987 is about 537.0541311992.

The spelling of 154900987 in words is "one hundred fifty-four million, nine hundred thousand, nine hundred eighty-seven".