55363649 has 4 divisors (see below), whose sum is σ = 60396720. Its totient is φ = 50330580.

The previous prime is 55363631. The next prime is 55363703. The reversal of 55363649 is 94636355.

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 a de Polignac number, because none of the positive numbers 2^k-55363649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55363949) 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, 2516519 + ... + 2516540.

It is an arithmetic number, because the mean of its divisors is an integer number (15099180).

Almost surely, 2^55363649 is an apocalyptic number.

It is an amenable number.

55363649 is a deficient number, since it is larger than the sum of its proper divisors (5033071).

55363649 is a wasteful number, since it uses less digits than its factorization.

55363649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5033070.

The product of its digits is 291600, while the sum is 41.

The square root of 55363649 is about 7440.6753053738. The cubic root of 55363649 is about 381.1315509844.

The spelling of 55363649 in words is "fifty-five million, three hundred sixty-three thousand, six hundred forty-nine".