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55760401 = 64786183
BaseRepresentation
bin1101010010110…
…1011000010001
310212220220220001
43110231120101
5103233313101
65311050001
71244645524
oct324553021
9125826801
1055760401
1129525684
1216810901
13b724328
147596bbb
154d66901
hex352d611

55760401 has 4 divisors (see below), whose sum is σ = 55847232. Its totient is φ = 55673572.

The previous prime is 55760387. The next prime is 55760423. The reversal of 55760401 is 10406755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10406755 = 52081351.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-55760401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55760401.

It is not an unprimeable number, because it can be changed into a prime (55760431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42445 + ... + 43738.

It is an arithmetic number, because the mean of its divisors is an integer number (13961808).

Almost surely, 255760401 is an apocalyptic number.

It is an amenable number.

55760401 is a deficient number, since it is larger than the sum of its proper divisors (86831).

55760401 is an equidigital number, since it uses as much as digits as its factorization.

55760401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86830.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 55760401 is about 7467.2887315277. The cubic root of 55760401 is about 382.0398179486.

The spelling of 55760401 in words is "fifty-five million, seven hundred sixty thousand, four hundred one".

Divisors: 1 647 86183 55760401