140484557 has 2 divisors, whose sum is σ = 140484558. Its totient is φ = 140484556.

The previous prime is 140484527. The next prime is 140484559. The reversal of 140484557 is 755484041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114789796 + 25694761 = 10714^2 + 5069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140484557 is a prime.

Together with 140484559, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140484557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140484559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70242278 + 70242279.

It is an arithmetic number, because the mean of its divisors is an integer number (70242279).

Almost surely, 2^140484557 is an apocalyptic number.

It is an amenable number.

140484557 is a deficient number, since it is larger than the sum of its proper divisors (1).

140484557 is an equidigital number, since it uses as much as digits as its factorization.

140484557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 89600, while the sum is 38.

The square root of 140484557 is about 11852.6181495904. The cubic root of 140484557 is about 519.8477821226.

The spelling of 140484557 in words is "one hundred forty million, four hundred eighty-four thousand, five hundred fifty-seven".