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61253101223 = 531155718891
BaseRepresentation
bin111001000010111110…
…000010011010100111
312212002211111221110122
4321002332002122213
52000421243214343
644050030312155
74265623525016
oct710276023247
9185084457418
1061253101223
1123a82862606
12ba5565865b
135a122544c2
142d71086a7d
1518d777c068
hexe42f826a7

61253101223 has 4 divisors (see below), whose sum is σ = 62408820168. Its totient is φ = 60097382280.

The previous prime is 61253101201. The next prime is 61253101253. The reversal of 61253101223 is 32210135216.

It is a happy number.

61253101223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-61253101223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61253101192 and 61253101201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61253101253) 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, 577859393 + ... + 577859498.

It is an arithmetic number, because the mean of its divisors is an integer number (15602205042).

Almost surely, 261253101223 is an apocalyptic number.

61253101223 is a deficient number, since it is larger than the sum of its proper divisors (1155718945).

61253101223 is a wasteful number, since it uses less digits than its factorization.

61253101223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155718944.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 61253101223 its reverse (32210135216), we get a palindrome (93463236439).

The spelling of 61253101223 in words is "sixty-one billion, two hundred fifty-three million, one hundred one thousand, two hundred twenty-three".

Divisors: 1 53 1155718891 61253101223