140556553 has 4 divisors (see below), whose sum is σ = 142654480. Its totient is φ = 138458628.

The previous prime is 140556497. The next prime is 140556587. The reversal of 140556553 is 355655041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355655041 = 7 ⋅50807863.

It is a cyclic number.

It is not a de Polignac number, because 140556553 - 2²⁵ = 107002121 is a prime.

It is a super-2 number, since 2×140556553² = 39512289182483618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140556253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048863 + ... + 1048996.

It is an arithmetic number, because the mean of its divisors is an integer number (35663620).

Almost surely, 2^140556553 is an apocalyptic number.

It is an amenable number.

140556553 is a deficient number, since it is larger than the sum of its proper divisors (2097927).

140556553 is an equidigital number, since it uses as much as digits as its factorization.

140556553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097926.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 140556553 is about 11855.6548954497. The cubic root of 140556553 is about 519.9365714054.

The spelling of 140556553 in words is "one hundred forty million, five hundred fifty-six thousand, five hundred fifty-three".