149792521 has 4 divisors (see below), whose sum is σ = 153276112. Its totient is φ = 146308932.

The previous prime is 149792519. The next prime is 149792551. The reversal of 149792521 is 125297941.

It is a happy number.

149792521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149792521 - 2¹ = 149792519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149792501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1741731 + ... + 1741816.

It is an arithmetic number, because the mean of its divisors is an integer number (38319028).

Almost surely, 2^149792521 is an apocalyptic number.

It is an amenable number.

149792521 is a deficient number, since it is larger than the sum of its proper divisors (3483591).

149792521 is an equidigital number, since it uses as much as digits as its factorization.

149792521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3483590.

The product of its digits is 45360, while the sum is 40.

The square root of 149792521 is about 12238.9754881689. The cubic root of 149792521 is about 531.0841945128.

The spelling of 149792521 in words is "one hundred forty-nine million, seven hundred ninety-two thousand, five hundred twenty-one".