149578001 has 4 divisors (see below), whose sum is σ = 149743104. Its totient is φ = 149412900.

The previous prime is 149577997. The next prime is 149578003. The reversal of 149578001 is 100875941.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100875941 = 911 ⋅110731.

It is a cyclic number.

It is not a de Polignac number, because 149578001 - 2² = 149577997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149578003) 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 in 3 ways as a sum of consecutive naturals, for example, 81185 + ... + 83006.

It is an arithmetic number, because the mean of its divisors is an integer number (37435776).

Almost surely, 2^149578001 is an apocalyptic number.

It is an amenable number.

149578001 is a deficient number, since it is larger than the sum of its proper divisors (165103).

149578001 is an equidigital number, since it uses as much as digits as its factorization.

149578001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165102.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 149578001 is about 12230.2085427845. The cubic root of 149578001 is about 530.8305489814.

The spelling of 149578001 in words is "one hundred forty-nine million, five hundred seventy-eight thousand, one".