55941869 has 2 divisors, whose sum is σ = 55941870. Its totient is φ = 55941868.

The previous prime is 55941829. The next prime is 55941877. The reversal of 55941869 is 96814955.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52388644 + 3553225 = 7238^2 + 1885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55941869 is a prime.

It is a super-2 number, since 2×55941869² = 6258985414426322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55941829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27970934 + 27970935.

It is an arithmetic number, because the mean of its divisors is an integer number (27970935).

Almost surely, 2^55941869 is an apocalyptic number.

It is an amenable number.

55941869 is a deficient number, since it is larger than the sum of its proper divisors (1).

55941869 is an equidigital number, since it uses as much as digits as its factorization.

55941869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 47.

The square root of 55941869 is about 7479.4297242504. The cubic root of 55941869 is about 382.4538090519.

The spelling of 55941869 in words is "fifty-five million, nine hundred forty-one thousand, eight hundred sixty-nine".