53649761 has 4 divisors (see below), whose sum is σ = 58527024. Its totient is φ = 48772500.

The previous prime is 53649737. The next prime is 53649763. The reversal of 53649761 is 16794635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53649761 - 2⁶ = 53649697 is a prime.

It is a super-3 number, since 3×53649761³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53649763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2438615 + ... + 2438636.

It is an arithmetic number, because the mean of its divisors is an integer number (14631756).

Almost surely, 2^53649761 is an apocalyptic number.

It is an amenable number.

53649761 is a deficient number, since it is larger than the sum of its proper divisors (4877263).

53649761 is a wasteful number, since it uses less digits than its factorization.

53649761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4877262.

The product of its digits is 136080, while the sum is 41.

The square root of 53649761 is about 7324.5997160254. The cubic root of 53649761 is about 377.1573687448.

The spelling of 53649761 in words is "fifty-three million, six hundred forty-nine thousand, seven hundred sixty-one".