53649771 has 16 divisors (see below), whose sum is σ = 83747328. Its totient is φ = 29908800.

The previous prime is 53649763. The next prime is 53649779. The reversal of 53649771 is 17794635.

53649771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (53649763) and next prime (53649779).

It is not a de Polignac number, because 53649771 - 2³ = 53649763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53649779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30295 + ... + 32016.

It is an arithmetic number, because the mean of its divisors is an integer number (5234208).

Almost surely, 2^53649771 is an apocalyptic number.

53649771 is a deficient number, since it is larger than the sum of its proper divisors (30097557).

53649771 is a wasteful number, since it uses less digits than its factorization.

53649771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62362.

The product of its digits is 158760, while the sum is 42.

The square root of 53649771 is about 7324.6003986566. The cubic root of 53649771 is about 377.1573921781.

The spelling of 53649771 in words is "fifty-three million, six hundred forty-nine thousand, seven hundred seventy-one".