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4987051 = 17832797
BaseRepresentation
bin10011000001100010101011
3100101100221121
4103001202223
52234041201
6254520111
760250336
oct23014253
910340847
104987051
1128a6933
121806037
131057c24
1493b61d
156879a1
hex4c18ab

4987051 has 4 divisors (see below), whose sum is σ = 4991632. Its totient is φ = 4982472.

The previous prime is 4987027. The next prime is 4987057. The reversal of 4987051 is 1507894.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1507894 = 2753947.

It is a cyclic number.

It is not a de Polignac number, because 4987051 - 25 = 4987019 is a prime.

It is a super-3 number, since 3×49870513 (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4986998 and 4987016.

It is not an unprimeable number, because it can be changed into a prime (4987057) 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, 385 + ... + 3181.

It is an arithmetic number, because the mean of its divisors is an integer number (1247908).

Almost surely, 24987051 is an apocalyptic number.

4987051 is a deficient number, since it is larger than the sum of its proper divisors (4581).

4987051 is a wasteful number, since it uses less digits than its factorization.

4987051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4580.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 4987051 is about 2233.1706159629. The cubic root of 4987051 is about 170.8498505280.

The spelling of 4987051 in words is "four million, nine hundred eighty-seven thousand, fifty-one".

Divisors: 1 1783 2797 4987051