55740253 has 2 divisors, whose sum is σ = 55740254. Its totient is φ = 55740252.

The previous prime is 55740239. The next prime is 55740271. The reversal of 55740253 is 35204755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46758244 + 8982009 = 6838^2 + 2997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55740253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55740283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27870126 + 27870127.

It is an arithmetic number, because the mean of its divisors is an integer number (27870127).

Almost surely, 2^55740253 is an apocalyptic number.

It is an amenable number.

55740253 is a deficient number, since it is larger than the sum of its proper divisors (1).

55740253 is an equidigital number, since it uses as much as digits as its factorization.

55740253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 55740253 is about 7465.9395256056. The cubic root of 55740253 is about 381.9937980408.

The spelling of 55740253 in words is "fifty-five million, seven hundred forty thousand, two hundred fifty-three".