149499561 has 8 divisors (see below), whose sum is σ = 200038240. Its totient is φ = 99313632.

The previous prime is 149499551. The next prime is 149499599. The reversal of 149499561 is 165994941.

It is a happy number.

149499561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149499561 - 2¹³ = 149491369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149499561.

It is not an unprimeable number, because it can be changed into a prime (149499551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87196 + ... + 88893.

It is an arithmetic number, because the mean of its divisors is an integer number (25004780).

Almost surely, 2^149499561 is an apocalyptic number.

It is an amenable number.

149499561 is a deficient number, since it is larger than the sum of its proper divisors (50538679).

149499561 is a wasteful number, since it uses less digits than its factorization.

149499561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176375.

The product of its digits is 349920, while the sum is 48.

The square root of 149499561 is about 12227.0013085793. The cubic root of 149499561 is about 530.7377420432.

The spelling of 149499561 in words is "one hundred forty-nine million, four hundred ninety-nine thousand, five hundred sixty-one".