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30525050057 = 291052587933
BaseRepresentation
bin11100011011011011…
…110100110011001001
32220210100021012122112
4130123123310303021
51000003403100212
622004545432105
72130303434015
oct343333646311
986710235575
1030525050057
1111a4465a9a7
125aba93b635
132b560ab0c8
141698081545
15bd9c8e422
hex71b6f4cc9

30525050057 has 4 divisors (see below), whose sum is σ = 31577638020. Its totient is φ = 29472462096.

The previous prime is 30525050053. The next prime is 30525050063. The reversal of 30525050057 is 75005052503.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75005052503 = 509147357667.

It can be written as a sum of positive squares in 2 ways, for example, as 9559168441 + 20965881616 = 97771^2 + 144796^2 .

It is a cyclic number.

It is not a de Polignac number, because 30525050057 - 22 = 30525050053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30525050051) 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, 526293938 + ... + 526293995.

It is an arithmetic number, because the mean of its divisors is an integer number (7894409505).

Almost surely, 230525050057 is an apocalyptic number.

It is an amenable number.

30525050057 is a deficient number, since it is larger than the sum of its proper divisors (1052587963).

30525050057 is a wasteful number, since it uses less digits than its factorization.

30525050057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052587962.

The product of its (nonzero) digits is 26250, while the sum is 32.

The spelling of 30525050057 in words is "thirty billion, five hundred twenty-five million, fifty thousand, fifty-seven".

Divisors: 1 29 1052587933 30525050057