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51188001 = 3139122753
BaseRepresentation
bin1100001101000…
…1000100100001
310120022121201220
43003101010201
5101101004001
65025045253
71161043104
oct303210441
9116277656
1051188001
1126992337
1215186829
13a7b3077
146b2673b
154761c36
hex30d1121

51188001 has 8 divisors (see below), whose sum is σ = 68742240. Its totient is φ = 33879552.

The previous prime is 51187999. The next prime is 51188021. The reversal of 51188001 is 10088115.

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

It is not a de Polignac number, because 51188001 - 21 = 51187999 is a prime.

It is a super-2 number, since 2×511880012 = 5240422892752002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51188021) 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, 60960 + ... + 61793.

It is an arithmetic number, because the mean of its divisors is an integer number (8592780).

Almost surely, 251188001 is an apocalyptic number.

It is an amenable number.

51188001 is a deficient number, since it is larger than the sum of its proper divisors (17554239).

51188001 is a wasteful number, since it uses less digits than its factorization.

51188001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122895.

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 51188001 is about 7154.5790232550. The cubic root of 51188001 is about 371.2980969100.

The spelling of 51188001 in words is "fifty-one million, one hundred eighty-eight thousand, one".

Divisors: 1 3 139 417 122753 368259 17062667 51188001