140532251 has 8 divisors (see below), whose sum is σ = 148929840. Its totient is φ = 132149248.

The previous prime is 140532247. The next prime is 140532263. The reversal of 140532251 is 152235041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140532251 - 2² = 140532247 is a prime.

It is a super-2 number, since 2×140532251² = 39498627142254002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140532211) 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 7 ways as a sum of consecutive naturals, for example, 21020 + ... + 26886.

It is an arithmetic number, because the mean of its divisors is an integer number (18616230).

Almost surely, 2^140532251 is an apocalyptic number.

140532251 is a deficient number, since it is larger than the sum of its proper divisors (8397589).

140532251 is a wasteful number, since it uses less digits than its factorization.

140532251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7293.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 140532251 is about 11854.6299393950. The cubic root of 140532251 is about 519.9066042817.

Adding to 140532251 its reverse (152235041), we get a palindrome (292767292).

The spelling of 140532251 in words is "one hundred forty million, five hundred thirty-two thousand, two hundred fifty-one".