47421757 has 8 divisors (see below), whose sum is σ = 49233240. Its totient is φ = 45622080.

The previous prime is 47421713. The next prime is 47421763. The reversal of 47421757 is 75712474.

It can be written as a sum of positive squares in 4 ways, for example, as 14485636 + 32936121 = 3806^2 + 5739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47421757 - 2¹⁹ = 46897469 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 (47421767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5707 + ... + 11287.

It is an arithmetic number, because the mean of its divisors is an integer number (6154155).

Almost surely, 2^47421757 is an apocalyptic number.

It is an amenable number.

47421757 is a deficient number, since it is larger than the sum of its proper divisors (1811483).

47421757 is a wasteful number, since it uses less digits than its factorization.

47421757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5903.

The product of its digits is 54880, while the sum is 37.

The square root of 47421757 is about 6886.3456927459. The cubic root of 47421757 is about 361.9588615583.

The spelling of 47421757 in words is "forty-seven million, four hundred twenty-one thousand, seven hundred fifty-seven".