53871849 has 6 divisors (see below), whose sum is σ = 77814906. Its totient is φ = 35914560.

The previous prime is 53871841. The next prime is 53871869. The reversal of 53871849 is 94817835.

53871849 is a `hidden beast` number, since 538 + 71 + 8 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 35105625 + 18766224 = 5925^2 + 4332^2 .

It is not a de Polignac number, because 53871849 - 2³ = 53871841 is a prime.

It is a super-2 number, since 2×53871849² = 5804352229357602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53871841) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2992872 + ... + 2992889.

It is an arithmetic number, because the mean of its divisors is an integer number (12969151).

Almost surely, 2^53871849 is an apocalyptic number.

It is an amenable number.

53871849 is a deficient number, since it is larger than the sum of its proper divisors (23943057).

53871849 is a wasteful number, since it uses less digits than its factorization.

53871849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5985767 (or 5985764 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 53871849 is about 7339.7444778412. The cubic root of 53871849 is about 377.6770778665.

The spelling of 53871849 in words is "fifty-three million, eight hundred seventy-one thousand, eight hundred forty-nine".