54653639 has 2 divisors, whose sum is σ = 54653640. Its totient is φ = 54653638.

The previous prime is 54653629. The next prime is 54653659. The reversal of 54653639 is 93635645.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54653639 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 54653596 and 54653605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54653609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27326819 + 27326820.

It is an arithmetic number, because the mean of its divisors is an integer number (27326820).

Almost surely, 2^54653639 is an apocalyptic number.

54653639 is a deficient number, since it is larger than the sum of its proper divisors (1).

54653639 is an equidigital number, since it uses as much as digits as its factorization.

54653639 is an evil number, because the sum of its binary digits is even.

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

The square root of 54653639 is about 7392.8099529205. The cubic root of 54653639 is about 379.4952647850.

The spelling of 54653639 in words is "fifty-four million, six hundred fifty-three thousand, six hundred thirty-nine".