140775545 has 4 divisors (see below), whose sum is σ = 168930660. Its totient is φ = 112620432.

The previous prime is 140775539. The next prime is 140775581. The reversal of 140775545 is 545577041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545577041 = 157 ⋅3475013.

It can be written as a sum of positive squares in 2 ways, for example, as 94167616 + 46607929 = 9704^2 + 6827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140775545 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140775499 and 140775508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14077550 + ... + 14077559.

It is an arithmetic number, because the mean of its divisors is an integer number (42232665).

Almost surely, 2^140775545 is an apocalyptic number.

It is an amenable number.

140775545 is a deficient number, since it is larger than the sum of its proper divisors (28155115).

140775545 is an equidigital number, since it uses as much as digits as its factorization.

140775545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28155114.

The product of its (nonzero) digits is 98000, while the sum is 38.

The square root of 140775545 is about 11864.8870622522. The cubic root of 140775545 is about 520.2064577127.

The spelling of 140775545 in words is "one hundred forty million, seven hundred seventy-five thousand, five hundred forty-five".