1356130521 has 6 divisors (see below), whose sum is σ = 1958855210. Its totient is φ = 904087008.

The previous prime is 1356130507. The next prime is 1356130537. The reversal of 1356130521 is 1250316531.

1356130521 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 130 + 521 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1277276121 + 78854400 = 35739^2 + 8880^2 .

It is not a de Polignac number, because 1356130521 - 2¹³ = 1356122329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1356130541) 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, 75340576 + ... + 75340593.

Almost surely, 2^1356130521 is an apocalyptic number.

It is an amenable number.

1356130521 is a deficient number, since it is larger than the sum of its proper divisors (602724689).

1356130521 is a wasteful number, since it uses less digits than its factorization.

1356130521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150681175 (or 150681172 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1356130521 is about 36825.6774683101. The cubic root of 1356130521 is about 1106.8798889470.

The spelling of 1356130521 in words is "one billion, three hundred fifty-six million, one hundred thirty thousand, five hundred twenty-one".