140528251 has 2 divisors, whose sum is σ = 140528252. Its totient is φ = 140528250.

The previous prime is 140528249. The next prime is 140528263. The reversal of 140528251 is 152825041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140528251 - 2¹ = 140528249 is a prime.

Together with 140528249, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140528231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70264125 + 70264126.

It is an arithmetic number, because the mean of its divisors is an integer number (70264126).

Almost surely, 2^140528251 is an apocalyptic number.

140528251 is a deficient number, since it is larger than the sum of its proper divisors (1).

140528251 is an equidigital number, since it uses as much as digits as its factorization.

140528251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 140528251 is about 11854.4612277404. The cubic root of 140528251 is about 519.9016714967.

The spelling of 140528251 in words is "one hundred forty million, five hundred twenty-eight thousand, two hundred fifty-one".