55724693 has 2 divisors, whose sum is σ = 55724694. Its totient is φ = 55724692.

The previous prime is 55724633. The next prime is 55724723. The reversal of 55724693 is 39642755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54789604 + 935089 = 7402^2 + 967^2 .

It is a cyclic number.

It is not a de Polignac number, because 55724693 - 2⁸ = 55724437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55724693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55724633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27862346 + 27862347.

It is an arithmetic number, because the mean of its divisors is an integer number (27862347).

Almost surely, 2^55724693 is an apocalyptic number.

It is an amenable number.

55724693 is a deficient number, since it is larger than the sum of its proper divisors (1).

55724693 is an equidigital number, since it uses as much as digits as its factorization.

55724693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 41.

The square root of 55724693 is about 7464.8973871045. The cubic root of 55724693 is about 381.9582499624.

The spelling of 55724693 in words is "fifty-five million, seven hundred twenty-four thousand, six hundred ninety-three".