55070685 has 20 divisors (see below), whose sum is σ = 98720028. Its totient is φ = 29370816.

The previous prime is 55070677. The next prime is 55070693. The reversal of 55070685 is 58607055.

It is an interprime number because it is at equal distance from previous prime (55070677) and next prime (55070693).

It can be written as a sum of positive squares in 2 ways, for example, as 36252441 + 18818244 = 6021^2 + 4338^2 .

It is not a de Polignac number, because 55070685 - 2³ = 55070677 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67584 + ... + 68393.

Almost surely, 2^55070685 is an apocalyptic number.

It is an amenable number.

55070685 is a deficient number, since it is larger than the sum of its proper divisors (43649343).

55070685 is a wasteful number, since it uses less digits than its factorization.

55070685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135994 (or 135985 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 55070685 is about 7420.9625386469. The cubic root of 55070685 is about 380.4580925122.

It can be divided in two parts, 55070 and 685, that added together give a palindrome (55755).

The spelling of 55070685 in words is "fifty-five million, seventy thousand, six hundred eighty-five".