57471421 has 8 divisors (see below), whose sum is σ = 65742464. Its totient is φ = 49215600.

The previous prime is 57471413. The next prime is 57471493. The reversal of 57471421 is 12417475.

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

It is not a de Polignac number, because 57471421 - 2³ = 57471413 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 (57474421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5971 + ... + 12271.

It is an arithmetic number, because the mean of its divisors is an integer number (8217808).

Almost surely, 2^57471421 is an apocalyptic number.

It is an amenable number.

57471421 is a deficient number, since it is larger than the sum of its proper divisors (8271043).

57471421 is a wasteful number, since it uses less digits than its factorization.

57471421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7611.

The product of its digits is 7840, while the sum is 31.

The square root of 57471421 is about 7580.9907663840. The cubic root of 57471421 is about 385.9081747981.

Adding to 57471421 its reverse (12417475), we get a palindrome (69888896).

The spelling of 57471421 in words is "fifty-seven million, four hundred seventy-one thousand, four hundred twenty-one".