Search a number
-
+
55025719 = 717462401
BaseRepresentation
bin1101000111101…
…0000000110111
310211112121002121
43101322000313
5103041310334
65243220411
71235465560
oct321720067
9124477077
1055025719
1129073701
1216517707
13b527ac8
147445167
154c6ddb4
hex347a037

55025719 has 8 divisors (see below), whose sum is σ = 66585888. Its totient is φ = 44390400.

The previous prime is 55025717. The next prime is 55025741. The reversal of 55025719 is 91752055.

55025719 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55025719 - 21 = 55025717 is a prime.

It is a super-2 number, since 2×550257192 = 6055659502933922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55025717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231082 + ... + 231319.

It is an arithmetic number, because the mean of its divisors is an integer number (8323236).

Almost surely, 255025719 is an apocalyptic number.

55025719 is a deficient number, since it is larger than the sum of its proper divisors (11560169).

55025719 is a wasteful number, since it uses less digits than its factorization.

55025719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462425.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 55025719 is about 7417.9322590598. The cubic root of 55025719 is about 380.3545144959.

The spelling of 55025719 in words is "fifty-five million, twenty-five thousand, seven hundred nineteen".

Divisors: 1 7 17 119 462401 3236807 7860817 55025719