55131767 has 2 divisors, whose sum is σ = 55131768. Its totient is φ = 55131766.

The previous prime is 55131751. The next prime is 55131779. The reversal of 55131767 is 76713155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55131767 - 2⁴ = 55131751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55131067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27565883 + 27565884.

It is an arithmetic number, because the mean of its divisors is an integer number (27565884).

Almost surely, 2^55131767 is an apocalyptic number.

55131767 is a deficient number, since it is larger than the sum of its proper divisors (1).

55131767 is an equidigital number, since it uses as much as digits as its factorization.

55131767 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22050, while the sum is 35.

The square root of 55131767 is about 7425.0769019587. The cubic root of 55131767 is about 380.5987030418.

The spelling of 55131767 in words is "fifty-five million, one hundred thirty-one thousand, seven hundred sixty-seven".