55155597 has 8 divisors (see below), whose sum is σ = 84046656. Its totient is φ = 31517472.

The previous prime is 55155559. The next prime is 55155629. The reversal of 55155597 is 79555155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55155597 - 2⁶ = 55155533 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55155517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313208 + ... + 1313249.

It is an arithmetic number, because the mean of its divisors is an integer number (10505832).

Almost surely, 2^55155597 is an apocalyptic number.

It is an amenable number.

55155597 is a deficient number, since it is larger than the sum of its proper divisors (28891059).

55155597 is a wasteful number, since it uses less digits than its factorization.

55155597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626467.

The product of its digits is 196875, while the sum is 42.

The square root of 55155597 is about 7426.6814257783. The cubic root of 55155597 is about 380.6535314475.

The spelling of 55155597 in words is "fifty-five million, one hundred fifty-five thousand, five hundred ninety-seven".