140553451 has 4 divisors (see below), whose sum is σ = 140579712. Its totient is φ = 140527192.

The previous prime is 140553419. The next prime is 140553461. The reversal of 140553451 is 154355041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154355041 = 1063 ⋅145207.

It is a cyclic number.

It is not a de Polignac number, because 140553451 - 2⁵ = 140553419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140553461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1900 + ... + 16873.

It is an arithmetic number, because the mean of its divisors is an integer number (35144928).

Almost surely, 2^140553451 is an apocalyptic number.

140553451 is a deficient number, since it is larger than the sum of its proper divisors (26261).

140553451 is an equidigital number, since it uses as much as digits as its factorization.

140553451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26260.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 140553451 is about 11855.5240710818. The cubic root of 140553451 is about 519.9327464797.

The spelling of 140553451 in words is "one hundred forty million, five hundred fifty-three thousand, four hundred fifty-one".