139527001 has 4 divisors (see below), whose sum is σ = 144027904. Its totient is φ = 135026100.

The previous prime is 139526987. The next prime is 139527019. The reversal of 139527001 is 100725931.

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 139527001 - 2¹¹ = 139524953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139527061) 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, 2250405 + ... + 2250466.

It is an arithmetic number, because the mean of its divisors is an integer number (36006976).

Almost surely, 2^139527001 is an apocalyptic number.

It is an amenable number.

139527001 is a deficient number, since it is larger than the sum of its proper divisors (4500903).

139527001 is an equidigital number, since it uses as much as digits as its factorization.

139527001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500902.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 139527001 is about 11812.1547991888. The cubic root of 139527001 is about 518.6639778782.

The spelling of 139527001 in words is "one hundred thirty-nine million, five hundred twenty-seven thousand, one".