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55785954 = 2371328237
BaseRepresentation
bin1101010011001…
…1100111100010
310212222012221110
43110303213202
5103240122304
65311404150
71245113160
oct324634742
9125865843
1055785954
11295428a4
1216823656
13b732b53
1475a2230
154d6e289
hex35339e2

55785954 has 16 divisors (see below), whose sum is σ = 127510848. Its totient is φ = 15938832.

The previous prime is 55785941. The next prime is 55785979. The reversal of 55785954 is 45958755.

It is a happy number.

It is a super-2 number, since 2×557859542 = 6224145327380232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664077 + ... + 664160.

It is an arithmetic number, because the mean of its divisors is an integer number (7969428).

Almost surely, 255785954 is an apocalyptic number.

55785954 is an abundant number, since it is smaller than the sum of its proper divisors (71724894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55785954 is a wasteful number, since it uses less digits than its factorization.

55785954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328249.

The product of its digits is 1260000, while the sum is 48.

The square root of 55785954 is about 7468.9995313964. Note that the first 3 decimals coincide. The cubic root of 55785954 is about 382.0981674370.

The spelling of 55785954 in words is "fifty-five million, seven hundred eighty-five thousand, nine hundred fifty-four".

Divisors: 1 2 3 6 7 14 21 42 1328237 2656474 3984711 7969422 9297659 18595318 27892977 55785954