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55253012051 = 409135092939
BaseRepresentation
bin110011011101010101…
…100000111001010011
312021121200021211110202
4303131111200321103
51401124232341201
641214411445415
73664135565456
oct633525407123
9167550254422
1055253012051
1121483980826
12a86015686b
135297156c93
14296225349d
151685b27c6b
hexcdd560e53

55253012051 has 4 divisors (see below), whose sum is σ = 55388105400. Its totient is φ = 55117918704.

The previous prime is 55253012039. The next prime is 55253012159. The reversal of 55253012051 is 15021035255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15021035255 = 53004207051.

It is a cyclic number.

It is not a de Polignac number, because 55253012051 - 210 = 55253011027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55253012651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67546061 + ... + 67546878.

It is an arithmetic number, because the mean of its divisors is an integer number (13847026350).

Almost surely, 255253012051 is an apocalyptic number.

55253012051 is a deficient number, since it is larger than the sum of its proper divisors (135093349).

55253012051 is a wasteful number, since it uses less digits than its factorization.

55253012051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135093348.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 55253012051 in words is "fifty-five billion, two hundred fifty-three million, twelve thousand, fifty-one".

Divisors: 1 409 135092939 55253012051