55194157 has 2 divisors, whose sum is σ = 55194158. Its totient is φ = 55194156.

The previous prime is 55194143. The next prime is 55194173. The reversal of 55194157 is 75149155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52794756 + 2399401 = 7266^2 + 1549^2 .

It is a cyclic number.

It is not a de Polignac number, because 55194157 - 2¹⁹ = 54669869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55194127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27597078 + 27597079.

It is an arithmetic number, because the mean of its divisors is an integer number (27597079).

Almost surely, 2^55194157 is an apocalyptic number.

It is an amenable number.

55194157 is a deficient number, since it is larger than the sum of its proper divisors (1).

55194157 is an equidigital number, since it uses as much as digits as its factorization.

55194157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31500, while the sum is 37.

The square root of 55194157 is about 7429.2770173147. The cubic root of 55194157 is about 380.7422174061.

The spelling of 55194157 in words is "fifty-five million, one hundred ninety-four thousand, one hundred fifty-seven".