47742455 has 4 divisors (see below), whose sum is σ = 57290952. Its totient is φ = 38193960.

The previous prime is 47742451. The next prime is 47742463. The reversal of 47742455 is 55424774.

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

It is not a de Polignac number, because 47742455 - 2² = 47742451 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 (47742451) 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, 4774241 + ... + 4774250.

It is an arithmetic number, because the mean of its divisors is an integer number (14322738).

Almost surely, 2^47742455 is an apocalyptic number.

47742455 is a deficient number, since it is larger than the sum of its proper divisors (9548497).

47742455 is an equidigital number, since it uses as much as digits as its factorization.

47742455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9548496.

The product of its digits is 156800, while the sum is 38.

The square root of 47742455 is about 6909.5915219353. The cubic root of 47742455 is about 362.7729660234.

The spelling of 47742455 in words is "forty-seven million, seven hundred forty-two thousand, four hundred fifty-five".