55503697 has 2 divisors, whose sum is σ = 55503698. Its totient is φ = 55503696.

The previous prime is 55503683. The next prime is 55503703. The reversal of 55503697 is 79630555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33074001 + 22429696 = 5751^2 + 4736^2 .

It is a cyclic number.

It is not a de Polignac number, because 55503697 - 2¹⁵ = 55470929 is a prime.

It is not a weakly prime, because it can be changed into another prime (55503607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27751848 + 27751849.

It is an arithmetic number, because the mean of its divisors is an integer number (27751849).

Almost surely, 2^55503697 is an apocalyptic number.

It is an amenable number.

55503697 is a deficient number, since it is larger than the sum of its proper divisors (1).

55503697 is an equidigital number, since it uses as much as digits as its factorization.

55503697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141750, while the sum is 40.

The square root of 55503697 is about 7450.0803351373. The cubic root of 55503697 is about 381.4526507691.

The spelling of 55503697 in words is "fifty-five million, five hundred three thousand, six hundred ninety-seven".