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55100971 is a prime number
BaseRepresentation
bin1101001000110…
…0011000101011
310211200102022201
43102030120223
5103101212341
65245001031
71236231142
oct322143053
9124612281
1055100971
11291151a2
1216553177
13b553133
147464759
154c86331
hex348c62b

55100971 has 2 divisors, whose sum is σ = 55100972. Its totient is φ = 55100970.

The previous prime is 55100963. The next prime is 55100977. The reversal of 55100971 is 17900155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55100971 - 23 = 55100963 is a prime.

It is a super-2 number, since 2×551009712 = 6072234010285682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55100977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27550485 + 27550486.

It is an arithmetic number, because the mean of its divisors is an integer number (27550486).

Almost surely, 255100971 is an apocalyptic number.

55100971 is a deficient number, since it is larger than the sum of its proper divisors (1).

55100971 is an equidigital number, since it uses as much as digits as its factorization.

55100971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 55100971 is about 7423.0028290443. The cubic root of 55100971 is about 380.5278237565.

The spelling of 55100971 in words is "fifty-five million, one hundred thousand, nine hundred seventy-one".