55767291 has 4 divisors (see below), whose sum is σ = 74356392. Its totient is φ = 37178192.

The previous prime is 55767281. The next prime is 55767301. The reversal of 55767291 is 19276755.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (55767281) and next prime (55767301).

It is a cyclic number.

It is not a de Polignac number, because 55767291 - 2⁹ = 55766779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55767241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9294546 + ... + 9294551.

It is an arithmetic number, because the mean of its divisors is an integer number (18589098).

Almost surely, 2^55767291 is an apocalyptic number.

55767291 is a deficient number, since it is larger than the sum of its proper divisors (18589101).

55767291 is a wasteful number, since it uses less digits than its factorization.

55767291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18589100.

The product of its digits is 132300, while the sum is 42.

The square root of 55767291 is about 7467.7500627699. The cubic root of 55767291 is about 382.0555528064.

The spelling of 55767291 in words is "fifty-five million, seven hundred sixty-seven thousand, two hundred ninety-one".