149975450 has 12 divisors (see below), whose sum is σ = 278954430. Its totient is φ = 59990160.

The previous prime is 149975437. The next prime is 149975461. The reversal of 149975450 is 54579941.

It can be written as a sum of positive squares in 3 ways, for example, as 140873161 + 9102289 = 11869^2 + 3017^2 .

It is a Curzon number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1499705 + ... + 1499804.

Almost surely, 2^149975450 is an apocalyptic number.

149975450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149975450 is a deficient number, since it is larger than the sum of its proper divisors (128978980).

149975450 is a wasteful number, since it uses less digits than its factorization.

149975450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999521 (or 2999516 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 149975450 is about 12246.4464233507. The cubic root of 149975450 is about 531.3002960455.

The spelling of 149975450 in words is "one hundred forty-nine million, nine hundred seventy-five thousand, four hundred fifty".