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51355130153 = 17192928319373
BaseRepresentation
bin101111110101000000…
…010001100100101001
311220120000201220201112
4233311000101210221
51320133403131103
635331530400105
73465425255345
oct576500214451
9156500656645
1051355130153
111a8636a5428
129b52890035
134ac573b1a2
1426b26c2625
151508824cd8
hexbf5011929

51355130153 has 32 divisors (see below), whose sum is σ = 59423932800. Its totient is φ = 44052857856.

The previous prime is 51355130149. The next prime is 51355130159. The reversal of 51355130153 is 35103155315.

It is a happy number.

It is not a de Polignac number, because 51355130153 - 22 = 51355130149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51355130159) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2641175 + ... + 2660547.

It is an arithmetic number, because the mean of its divisors is an integer number (1856997900).

Almost surely, 251355130153 is an apocalyptic number.

It is an amenable number.

51355130153 is a deficient number, since it is larger than the sum of its proper divisors (8068802647).

51355130153 is a wasteful number, since it uses less digits than its factorization.

51355130153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19721.

The product of its (nonzero) digits is 16875, while the sum is 32.

Adding to 51355130153 its reverse (35103155315), we get a palindrome (86458285468).

The spelling of 51355130153 in words is "fifty-one billion, three hundred fifty-five million, one hundred thirty thousand, one hundred fifty-three".

Divisors: 1 17 19 29 283 323 493 551 4811 5377 8207 9367 19373 91409 139519 155933 329341 368087 561817 2650861 5482559 6257479 9550889 10674523 93203503 104168621 158994211 181466891 1770866557 2702901587 3020890009 51355130153