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5101145551 = 23221788937
BaseRepresentation
bin1001100000000110…
…10100110111001111
3111011111201001011201
410300003110313033
540421343124201
62202103130331
7240261010315
oct46003246717
914144631151
105101145551
112188511177
12ba44439a7
13633ab3928
143656b00b5
151ecc85801
hex1300d4dcf

5101145551 has 4 divisors (see below), whose sum is σ = 5322934512. Its totient is φ = 4879356592.

The previous prime is 5101145549. The next prime is 5101145641. The reversal of 5101145551 is 1555411015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1555411015 = 5311082203.

It is a cyclic number.

It is not a de Polignac number, because 5101145551 - 21 = 5101145549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5101145531) 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, 110894446 + ... + 110894491.

It is an arithmetic number, because the mean of its divisors is an integer number (1330733628).

Almost surely, 25101145551 is an apocalyptic number.

5101145551 is a deficient number, since it is larger than the sum of its proper divisors (221788961).

5101145551 is a wasteful number, since it uses less digits than its factorization.

5101145551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221788960.

The product of its (nonzero) digits is 2500, while the sum is 28.

The square root of 5101145551 is about 71422.3042963471. The cubic root of 5101145551 is about 1721.4294893557.

Adding to 5101145551 its reverse (1555411015), we get a palindrome (6656556566).

The spelling of 5101145551 in words is "five billion, one hundred one million, one hundred forty-five thousand, five hundred fifty-one".

Divisors: 1 23 221788937 5101145551