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51355345 = 522745247
BaseRepresentation
bin1100001111100…
…1111011010001
310120122010021211
43003321323101
5101121332340
65032420121
71162341016
oct303717321
9116563254
1051355345
1126a97038
1215247641
13a8412a2
146b6b70d
1547965ea
hex30f9ed1

51355345 has 8 divisors (see below), whose sum is σ = 61899264. Its totient is φ = 40902384.

The previous prime is 51355331. The next prime is 51355361. The reversal of 51355345 is 54355315.

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

It is a cyclic number.

It is not a de Polignac number, because 51355345 - 29 = 51354833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21489 + ... + 23758.

It is an arithmetic number, because the mean of its divisors is an integer number (7737408).

Almost surely, 251355345 is an apocalyptic number.

It is an amenable number.

51355345 is a deficient number, since it is larger than the sum of its proper divisors (10543919).

51355345 is a wasteful number, since it uses less digits than its factorization.

51355345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45479.

The product of its digits is 22500, while the sum is 31.

The square root of 51355345 is about 7166.2643685535. The cubic root of 51355345 is about 371.7022731499.

The spelling of 51355345 in words is "fifty-one million, three hundred fifty-five thousand, three hundred forty-five".

Divisors: 1 5 227 1135 45247 226235 10271069 51355345