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50024021 = 244720443
BaseRepresentation
bin1011111011010…
…0111001010101
310111010111001112
42332310321111
5100301232041
64544104405
71145124425
oct276647125
9114114045
1050024021
1126267873
1214905105
13a496318
146902485
1545d1deb
hex2fb4e55

50024021 has 4 divisors (see below), whose sum is σ = 50046912. Its totient is φ = 50001132.

The previous prime is 50023999. The next prime is 50024033. The reversal of 50024021 is 12042005.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-50024021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50023987 and 50024005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50024041) 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, 7775 + ... + 12668.

It is an arithmetic number, because the mean of its divisors is an integer number (12511728).

Almost surely, 250024021 is an apocalyptic number.

It is an amenable number.

50024021 is a deficient number, since it is larger than the sum of its proper divisors (22891).

50024021 is a wasteful number, since it uses less digits than its factorization.

50024021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22890.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 50024021 is about 7072.7661491103. The cubic root of 50024021 is about 368.4621364993.

Adding to 50024021 its reverse (12042005), we get a palindrome (62066026).

The spelling of 50024021 in words is "fifty million, twenty-four thousand, twenty-one".

Divisors: 1 2447 20443 50024021