140523553 has 2 divisors, whose sum is σ = 140523554. Its totient is φ = 140523552.

The previous prime is 140523529. The next prime is 140523557. The reversal of 140523553 is 355325041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113358609 + 27164944 = 10647^2 + 5212^2 .

It is a cyclic number.

It is not a de Polignac number, because 140523553 - 2¹⁷ = 140392481 is a prime.

It is not a weakly prime, because it can be changed into another prime (140523557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70261776 + 70261777.

It is an arithmetic number, because the mean of its divisors is an integer number (70261777).

Almost surely, 2^140523553 is an apocalyptic number.

It is an amenable number.

140523553 is a deficient number, since it is larger than the sum of its proper divisors (1).

140523553 is an equidigital number, since it uses as much as digits as its factorization.

140523553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 140523553 is about 11854.2630728359. The cubic root of 140523553 is about 519.8958778211.

Adding to 140523553 its reverse (355325041), we get a palindrome (495848594).

The spelling of 140523553 in words is "one hundred forty million, five hundred twenty-three thousand, five hundred fifty-three".