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50142957 = 319879701
BaseRepresentation
bin1011111101000…
…1111011101101
310111100112012120
42333101323231
5100314033312
64550423153
71146131244
oct277217355
9114315176
1050142957
1126339167
1214961ab9
13a5084b7
14693395b
15460728c
hex2fd1eed

50142957 has 8 divisors (see below), whose sum is σ = 70376160. Its totient is φ = 31669200.

The previous prime is 50142949. The next prime is 50143003. The reversal of 50142957 is 75924105.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50142957 - 23 = 50142949 is a prime.

It is a super-2 number, since 2×501429572 = 5028632273407698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50142907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439794 + ... + 439907.

It is an arithmetic number, because the mean of its divisors is an integer number (8797020).

Almost surely, 250142957 is an apocalyptic number.

50142957 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

50142957 is a deficient number, since it is larger than the sum of its proper divisors (20233203).

50142957 is a wasteful number, since it uses less digits than its factorization.

50142957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879723.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 50142957 is about 7081.1691831222. The cubic root of 50142957 is about 368.7539211687.

The spelling of 50142957 in words is "fifty million, one hundred forty-two thousand, nine hundred fifty-seven".

Divisors: 1 3 19 57 879701 2639103 16714319 50142957