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55699999 is a prime number
BaseRepresentation
bin1101010001111…
…0101000011111
310212210212000221
43110132220133
5103224344444
65305502211
71244304445
oct324365037
9125725027
1055699999
1129494263
12167a1967
13b7029a4
14757cb95
154d53a84
hex351ea1f

55699999 has 2 divisors, whose sum is σ = 55700000. Its totient is φ = 55699998.

The previous prime is 55699961. The next prime is 55700003. The reversal of 55699999 is 99999655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55699999 - 29 = 55699487 is a prime.

55699999 is a modest number, since divided by 9999 gives 5569 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55699909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27849999 + 27850000.

It is an arithmetic number, because the mean of its divisors is an integer number (27850000).

Almost surely, 255699999 is an apocalyptic number.

55699999 is a deficient number, since it is larger than the sum of its proper divisors (1).

55699999 is an equidigital number, since it uses as much as digits as its factorization.

55699999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8857350, while the sum is 61.

The square root of 55699999 is about 7463.2431958231. The cubic root of 55699999 is about 381.9018209353.

The spelling of 55699999 in words is "fifty-five million, six hundred ninety-nine thousand, nine hundred ninety-nine".