53240047 has 4 divisors (see below), whose sum is σ = 60845776. Its totient is φ = 45634320.

The previous prime is 53240023. The next prime is 53240087. The reversal of 53240047 is 74004235.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53240047 - 2¹⁵ = 53207279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53240087) 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, 3802854 + ... + 3802867.

It is an arithmetic number, because the mean of its divisors is an integer number (15211444).

Almost surely, 2^53240047 is an apocalyptic number.

53240047 is a deficient number, since it is larger than the sum of its proper divisors (7605729).

53240047 is an equidigital number, since it uses as much as digits as its factorization.

53240047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7605728.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 53240047 is about 7296.5777594705. The cubic root of 53240047 is about 376.1948189698.

It can be divided in two parts, 53 and 240047, that added together give a square (240100 = 490²).

The spelling of 53240047 in words is "fifty-three million, two hundred forty thousand, forty-seven".