53695649 has 4 divisors (see below), whose sum is σ = 61366464. Its totient is φ = 46024836.

The previous prime is 53695637. The next prime is 53695657. The reversal of 53695649 is 94659635.

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 53695649 - 2⁴ = 53695633 is a prime.

It is a super-3 number, since 3×53695649³ (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 (53695049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3835397 + ... + 3835410.

It is an arithmetic number, because the mean of its divisors is an integer number (15341616).

Almost surely, 2^53695649 is an apocalyptic number.

It is an amenable number.

53695649 is a deficient number, since it is larger than the sum of its proper divisors (7670815).

53695649 is an equidigital number, since it uses as much as digits as its factorization.

53695649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670814.

The product of its digits is 874800, while the sum is 47.

The square root of 53695649 is about 7327.7315043607. The cubic root of 53695649 is about 377.2648688528.

The spelling of 53695649 in words is "fifty-three million, six hundred ninety-five thousand, six hundred forty-nine".