154557490 has 16 divisors (see below), whose sum is σ = 279433152. Its totient is φ = 61549744.

The previous prime is 154557467. The next prime is 154557497. The reversal of 154557490 is 94755451.

It is not an unprimeable number, because it can be changed into a prime (154557497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31774 + ... + 36313.

It is an arithmetic number, because the mean of its divisors is an integer number (17464572).

Almost surely, 2^154557490 is an apocalyptic number.

154557490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

154557490 is a deficient number, since it is larger than the sum of its proper divisors (124875662).

154557490 is a wasteful number, since it uses less digits than its factorization.

154557490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68321.

The product of its (nonzero) digits is 126000, while the sum is 40.

The square root of 154557490 is about 12432.1152665184. The cubic root of 154557490 is about 536.6568601957.

The spelling of 154557490 in words is "one hundred fifty-four million, five hundred fifty-seven thousand, four hundred ninety".