149193550 has 24 divisors (see below), whose sum is σ = 302728392. Its totient is φ = 54252000.

The previous prime is 149193511. The next prime is 149193589. The reversal of 149193550 is 55391941.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (149193511) and next prime (149193589).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135081 + ... + 136180.

It is an arithmetic number, because the mean of its divisors is an integer number (12613683).

Almost surely, 2^149193550 is an apocalyptic number.

149193550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149193550 is an abundant number, since it is smaller than the sum of its proper divisors (153534842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149193550 is a wasteful number, since it uses less digits than its factorization.

149193550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271284 (or 271279 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 149193550 is about 12214.4811596727. The cubic root of 149193550 is about 530.3753719113.

The spelling of 149193550 in words is "one hundred forty-nine million, one hundred ninety-three thousand, five hundred fifty".