140551571 has 2 divisors, whose sum is σ = 140551572. Its totient is φ = 140551570.

The previous prime is 140551561. The next prime is 140551583. The reversal of 140551571 is 175155041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140551571 is a prime.

It is a super-2 number, since 2×140551571² = 39509488221136082, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140551561) 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 as a sum of consecutive naturals, namely, 70275785 + 70275786.

It is an arithmetic number, because the mean of its divisors is an integer number (70275786).

Almost surely, 2^140551571 is an apocalyptic number.

140551571 is a deficient number, since it is larger than the sum of its proper divisors (1).

140551571 is an equidigital number, since it uses as much as digits as its factorization.

140551571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3500, while the sum is 29.

The square root of 140551571 is about 11855.4447828835. Note that the first 3 decimals coincide. The cubic root of 140551571 is about 519.9304283156.

The spelling of 140551571 in words is "one hundred forty million, five hundred fifty-one thousand, five hundred seventy-one".