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51101001010 = 255110100101
BaseRepresentation
bin101111100101110110…
…110110010100110010
311212220022112211002001
4233211312312110302
51314123324013020
635250411444214
73456221225143
oct574566662462
9155808484061
1051101001010
111a743201444
129aa175666a
134a84bb1207
14268aa4daca
1514e137750a
hexbe5db6532

51101001010 has 8 divisors (see below), whose sum is σ = 91981801836. Its totient is φ = 20440400400.

The previous prime is 51101000989. The next prime is 51101001037. The reversal of 51101001010 is 1010010115.

It can be written as a sum of positive squares in 2 ways, for example, as 50397107049 + 703893961 = 224493^2 + 26531^2 .

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

It is a super-2 number, since 2×511010010102 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 5110100101 = 51101001010 / (5 + 1 + 1 + 0 + 1 + 0 + 0 + 1 + 0 + 1 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555050041 + ... + 2555050060.

Almost surely, 251101001010 is an apocalyptic number.

51101001010 is a deficient number, since it is larger than the sum of its proper divisors (40880800826).

51101001010 is a wasteful number, since it uses less digits than its factorization.

51101001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110100108.

The product of its (nonzero) digits is 5, while the sum is 10.

Adding to 51101001010 its reverse (1010010115), we get a palindrome (52111011125).

The spelling of 51101001010 in words is "fifty-one billion, one hundred one million, one thousand, ten".

Divisors: 1 2 5 10 5110100101 10220200202 25550500505 51101001010