140523451 has 2 divisors, whose sum is σ = 140523452. Its totient is φ = 140523450.

The previous prime is 140523437. The next prime is 140523457. The reversal of 140523451 is 154325041.

It is a happy number.

140523451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140523451 - 2¹³ = 140515259 is a prime.

It is not a weakly prime, because it can be changed into another prime (140523457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70261725 + 70261726.

It is an arithmetic number, because the mean of its divisors is an integer number (70261726).

Almost surely, 2^140523451 is an apocalyptic number.

140523451 is a deficient number, since it is larger than the sum of its proper divisors (1).

140523451 is an equidigital number, since it uses as much as digits as its factorization.

140523451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 140523451 is about 11854.2587705854. The cubic root of 140523451 is about 519.8957520311.

Adding to 140523451 its reverse (154325041), we get a palindrome (294848492).

The spelling of 140523451 in words is "one hundred forty million, five hundred twenty-three thousand, four hundred fifty-one".