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5210511157 = 16661312737
BaseRepresentation
bin1001101101001001…
…00001011100110101
3111110010111101120201
410312210201130311
541132342324112
62221011200501
7243056420425
oct46644413465
914403441521
105210511157
11223421a175
121014ba6131
136506562c7
1437601c485
1520768a257
hex136921735

5210511157 has 4 divisors (see below), whose sum is σ = 5210840556. Its totient is φ = 5210181760.

The previous prime is 5210511091. The next prime is 5210511193. The reversal of 5210511157 is 7511150125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4319249841 + 891261316 = 65721^2 + 29854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-5210511157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5210511457) 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, 139708 + ... + 173029.

It is an arithmetic number, because the mean of its divisors is an integer number (1302710139).

Almost surely, 25210511157 is an apocalyptic number.

It is an amenable number.

5210511157 is a deficient number, since it is larger than the sum of its proper divisors (329399).

5210511157 is a wasteful number, since it uses less digits than its factorization.

5210511157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329398.

The product of its (nonzero) digits is 1750, while the sum is 28.

The square root of 5210511157 is about 72183.8704767208. The cubic root of 5210511157 is about 1733.6447551845.

The spelling of 5210511157 in words is "five billion, two hundred ten million, five hundred eleven thousand, one hundred fifty-seven".

Divisors: 1 16661 312737 5210511157