57221447349 has 16 divisors (see below), whose sum is σ = 83424328704. Its totient is φ = 34599193200.

The previous prime is 57221447329. The next prime is 57221447357. The reversal of 57221447349 is 94374412275.

It is not a de Polignac number, because 57221447349 - 2¹¹ = 57221445301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57221447298 and 57221447307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57221447329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1997359 + ... + 2025804.

It is an arithmetic number, because the mean of its divisors is an integer number (5214020544).

Almost surely, 2^57221447349 is an apocalyptic number.

It is an amenable number.

57221447349 is a deficient number, since it is larger than the sum of its proper divisors (26202881355).

57221447349 is a wasteful number, since it uses less digits than its factorization.

57221447349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4023608.

The product of its digits is 1693440, while the sum is 48.

The spelling of 57221447349 in words is "fifty-seven billion, two hundred twenty-one million, four hundred forty-seven thousand, three hundred forty-nine".