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130535657 = 722663993
BaseRepresentation
bin1111100011111…
…01000011101001
3100002121220020222
413301331003221
5231404120112
620541455425
73143351300
oct761750351
9302556228
10130535657
116775840a
1237871575
1321075545
141349d437
15b6d7372
hex7c7d0e9

130535657 has 6 divisors (see below), whose sum is σ = 151847658. Its totient is φ = 111887664.

The previous prime is 130535651. The next prime is 130535683. The reversal of 130535657 is 756535031.

It can be written as a sum of positive squares in only one way, i.e., 115004176 + 15531481 = 10724^2 + 3941^2 .

It is not a de Polignac number, because 130535657 - 212 = 130531561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130535651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1331948 + ... + 1332045.

It is an arithmetic number, because the mean of its divisors is an integer number (25307943).

Almost surely, 2130535657 is an apocalyptic number.

It is an amenable number.

130535657 is a deficient number, since it is larger than the sum of its proper divisors (21312001).

130535657 is an equidigital number, since it uses as much as digits as its factorization.

130535657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664007 (or 2664000 counting only the distinct ones).

The product of its (nonzero) digits is 47250, while the sum is 35.

The square root of 130535657 is about 11425.2202166960. The cubic root of 130535657 is about 507.2745252857.

The spelling of 130535657 in words is "one hundred thirty million, five hundred thirty-five thousand, six hundred fifty-seven".

Divisors: 1 7 49 2663993 18647951 130535657