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99997055 = 519999411
BaseRepresentation
bin1011111010111…
…01010101111111
320222011101011122
411331131111333
5201044401210
613531141155
72322650414
oct575352577
9228141148
1099997055
115149a2a4
12295a47bb
1317942372
14d3d010b
158ba3b55
hex5f5d57f

99997055 has 4 divisors (see below), whose sum is σ = 119996472. Its totient is φ = 79997640.

The previous prime is 99997033. The next prime is 99997063. The reversal of 99997055 is 55079999.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2k-99997055 is a prime.

It is a super-2 number, since 2×999970552 = 19998822017346050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99996988 and 99997006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9999701 + ... + 9999710.

It is an arithmetic number, because the mean of its divisors is an integer number (29999118).

Almost surely, 299997055 is an apocalyptic number.

99997055 is a deficient number, since it is larger than the sum of its proper divisors (19999417).

99997055 is a wasteful number, since it uses less digits than its factorization.

99997055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19999416.

The product of its (nonzero) digits is 1148175, while the sum is 53.

The square root of 99997055 is about 9999.8527489159. The cubic root of 99997055 is about 464.1543268235.

The spelling of 99997055 in words is "ninety-nine million, nine hundred ninety-seven thousand, fifty-five".

Divisors: 1 5 19999411 99997055