140552587 has 4 divisors (see below), whose sum is σ = 160631536. Its totient is φ = 120473640.

The previous prime is 140552569. The next prime is 140552591. The reversal of 140552587 is 785255041.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 140552587 - 2⁷ = 140552459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140556587) 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, 10039464 + ... + 10039477.

It is an arithmetic number, because the mean of its divisors is an integer number (40157884).

Almost surely, 2^140552587 is an apocalyptic number.

140552587 is a deficient number, since it is larger than the sum of its proper divisors (20078949).

140552587 is an equidigital number, since it uses as much as digits as its factorization.

140552587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20078948.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 140552587 is about 11855.4876323161. The cubic root of 140552587 is about 519.9316811132.

The spelling of 140552587 in words is "one hundred forty million, five hundred fifty-two thousand, five hundred eighty-seven".