1355639061 has 16 divisors (see below), whose sum is σ = 2080601600. Its totient is φ = 769076208.

The previous prime is 1355639059. The next prime is 1355639063. The reversal of 1355639061 is 1609365531.

It is an interprime number because it is at equal distance from previous prime (1355639059) and next prime (1355639063).

It is not a de Polignac number, because 1355639061 - 2¹ = 1355639059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355639063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229291 + ... + 235128.

It is an arithmetic number, because the mean of its divisors is an integer number (130037600).

Almost surely, 2^1355639061 is an apocalyptic number.

It is an amenable number.

1355639061 is a deficient number, since it is larger than the sum of its proper divisors (724962539).

1355639061 is a wasteful number, since it uses less digits than its factorization.

1355639061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464568.

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 1355639061 is about 36819.0040739833. The cubic root of 1355639061 is about 1106.7461621637.

The spelling of 1355639061 in words is "one billion, three hundred fifty-five million, six hundred thirty-nine thousand, sixty-one".