55369157 has 2 divisors, whose sum is σ = 55369158. Its totient is φ = 55369156.

The previous prime is 55369129. The next prime is 55369177. The reversal of 55369157 is 75196355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55368481 + 676 = 7441^2 + 26^2 .

It is a cyclic number.

It is not a de Polignac number, because 55369157 - 2²² = 51174853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55369117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27684578 + 27684579.

It is an arithmetic number, because the mean of its divisors is an integer number (27684579).

Almost surely, 2^55369157 is an apocalyptic number.

It is an amenable number.

55369157 is a deficient number, since it is larger than the sum of its proper divisors (1).

55369157 is an equidigital number, since it uses as much as digits as its factorization.

55369157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141750, while the sum is 41.

The square root of 55369157 is about 7441.0454238635. The cubic root of 55369157 is about 381.1441898609.

The spelling of 55369157 in words is "fifty-five million, three hundred sixty-nine thousand, one hundred fifty-seven".