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540525157 = 2897186581
BaseRepresentation
bin100000001101111…
…100001001100101
31101200002112010021
4200031330021211
52101333301112
6125345155141
716252250044
oct4015741145
91350075107
10540525157
11258126607
1213102bab1
1387ca3993
1451b0455b
15326c0907
hex2037c265

540525157 has 4 divisors (see below), whose sum is σ = 540714636. Its totient is φ = 540335680.

The previous prime is 540525131. The next prime is 540525191. The reversal of 540525157 is 751525045.

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 311487201 + 229037956 = 17649^2 + 15134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-540525157 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 (540525107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90394 + ... + 96187.

It is an arithmetic number, because the mean of its divisors is an integer number (135178659).

Almost surely, 2540525157 is an apocalyptic number.

It is an amenable number.

540525157 is a deficient number, since it is larger than the sum of its proper divisors (189479).

540525157 is a wasteful number, since it uses less digits than its factorization.

540525157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189478.

The product of its (nonzero) digits is 35000, while the sum is 34.

The square root of 540525157 is about 23249.1969108612. The cubic root of 540525157 is about 814.5891800817.

The spelling of 540525157 in words is "five hundred forty million, five hundred twenty-five thousand, one hundred fifty-seven".

Divisors: 1 2897 186581 540525157