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55552157 is a prime number
BaseRepresentation
bin1101001111101…
…0100010011101
310212112100020022
43103322202131
5103210132112
65302401525
71243120433
oct323724235
9125470208
1055552157
11293a3181
12167302a5
13b6805cb
147540d53
154d24d72
hex34fa89d

55552157 has 2 divisors, whose sum is σ = 55552158. Its totient is φ = 55552156.

The previous prime is 55552111. The next prime is 55552163. The reversal of 55552157 is 75125555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31483321 + 24068836 = 5611^2 + 4906^2 .

It is a cyclic number.

It is not a de Polignac number, because 55552157 - 214 = 55535773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55552457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27776078 + 27776079.

It is an arithmetic number, because the mean of its divisors is an integer number (27776079).

Almost surely, 255552157 is an apocalyptic number.

It is an amenable number.

55552157 is a deficient number, since it is larger than the sum of its proper divisors (1).

55552157 is an equidigital number, since it uses as much as digits as its factorization.

55552157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43750, while the sum is 35.

The square root of 55552157 is about 7453.3319394751. The cubic root of 55552157 is about 381.5636332759.

The spelling of 55552157 in words is "fifty-five million, five hundred fifty-two thousand, one hundred fifty-seven".