149049554 has 4 divisors (see below), whose sum is σ = 223574334. Its totient is φ = 74524776.

The previous prime is 149049553. The next prime is 149049587. The reversal of 149049554 is 455940941.

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

It can be written as a sum of positive squares in only one way, i.e., 128210329 + 20839225 = 11323^2 + 4565^2 .

It is not an unprimeable number, because it can be changed into a prime (149049553) 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 as a sum of consecutive naturals, namely, 37262387 + ... + 37262390.

Almost surely, 2^149049554 is an apocalyptic number.

149049554 is a deficient number, since it is larger than the sum of its proper divisors (74524780).

149049554 is an equidigital number, since it uses as much as digits as its factorization.

149049554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74524779.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 149049554 is about 12208.5852579240. The cubic root of 149049554 is about 530.2046842024.

The spelling of 149049554 in words is "one hundred forty-nine million, forty-nine thousand, five hundred fifty-four".