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55222425541 = 173248377973
BaseRepresentation
bin110011011011100000…
…110101011111000101
312021112112201212200001
4303123200311133011
51401043420104131
641211400121301
73663314605123
oct633340653705
9167475655601
1055222425541
112146868a718
12a851a66231
135290a0805a
14295c170913
1516830d5261
hexcdb8357c5

55222425541 has 4 divisors (see below), whose sum is σ = 58470803532. Its totient is φ = 51974047552.

The previous prime is 55222425509. The next prime is 55222425547. The reversal of 55222425541 is 14552422255.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46162241316 + 9060184225 = 214854^2 + 95185^2 .

It is a cyclic number.

It is not a de Polignac number, because 55222425541 - 25 = 55222425509 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 55222425541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55222425547) 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, 1624188970 + ... + 1624189003.

It is an arithmetic number, because the mean of its divisors is an integer number (14617700883).

Almost surely, 255222425541 is an apocalyptic number.

It is an amenable number.

55222425541 is a deficient number, since it is larger than the sum of its proper divisors (3248377991).

55222425541 is a wasteful number, since it uses less digits than its factorization.

55222425541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248377990.

The product of its digits is 160000, while the sum is 37.

Adding to 55222425541 its reverse (14552422255), we get a palindrome (69774847796).

The spelling of 55222425541 in words is "fifty-five billion, two hundred twenty-two million, four hundred twenty-five thousand, five hundred forty-one".

Divisors: 1 17 3248377973 55222425541