50542609 has 4 divisors (see below), whose sum is σ = 54430516. Its totient is φ = 46654704.

The previous prime is 50542579. The next prime is 50542631. The reversal of 50542609 is 90624505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90624505 = 5 ⋅18124901.

It can be written as a sum of positive squares in 2 ways, for example, as 6027025 + 44515584 = 2455^2 + 6672^2 .

It is a cyclic number.

It is not a de Polignac number, because 50542609 - 2⁵ = 50542577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50542669) 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, 1943934 + ... + 1943959.

It is an arithmetic number, because the mean of its divisors is an integer number (13607629).

Almost surely, 2^50542609 is an apocalyptic number.

It is an amenable number.

50542609 is a deficient number, since it is larger than the sum of its proper divisors (3887907).

50542609 is a wasteful number, since it uses less digits than its factorization.

50542609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3887906.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 50542609 is about 7109.3325284446. The cubic root of 50542609 is about 369.7310170658.

The spelling of 50542609 in words is "fifty million, five hundred forty-two thousand, six hundred nine".