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55919469 = 337503779
BaseRepresentation
bin1101010101010…
…0001101101101
310220020000002110
43111110031231
5103303410334
65314314233
71246210344
oct325241555
9126200073
1055919469
1129624141
1216888979
13b77b858
1475d8b5b
154d98ae9
hex355436d

55919469 has 8 divisors (see below), whose sum is σ = 76574560. Its totient is φ = 36272016.

The previous prime is 55919441. The next prime is 55919483. The reversal of 55919469 is 96491955.

55919469 = T405 + T406 + ... + T737.

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

It is not a de Polignac number, because 55919469 - 212 = 55915373 is a prime.

It is a super-2 number, since 2×559194692 = 6253974026483922, 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 (55919419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251779 + ... + 252000.

It is an arithmetic number, because the mean of its divisors is an integer number (9571820).

Almost surely, 255919469 is an apocalyptic number.

It is an amenable number.

55919469 is a deficient number, since it is larger than the sum of its proper divisors (20655091).

55919469 is a wasteful number, since it uses less digits than its factorization.

55919469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503819.

The product of its digits is 437400, while the sum is 48.

The square root of 55919469 is about 7477.9321339525. The cubic root of 55919469 is about 382.4027554065.

It can be divided in two parts, 5591946 and 9, that added together give a palindrome (5591955).

The spelling of 55919469 in words is "fifty-five million, nine hundred nineteen thousand, four hundred sixty-nine".

Divisors: 1 3 37 111 503779 1511337 18639823 55919469