1355205051 has 12 divisors (see below), whose sum is σ = 1959555312. Its totient is φ = 902529936.

The previous prime is 1355205023. The next prime is 1355205067. The reversal of 1355205051 is 1505025531.

1355205051 is a `hidden beast` number, since 13 + 552 + 0 + 50 + 51 = 666.

1355205051 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1355205051 - 2¹⁸ = 1354942907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1355205091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69156 + ... + 86561.

It is an arithmetic number, because the mean of its divisors is an integer number (163296276).

Almost surely, 2^1355205051 is an apocalyptic number.

1355205051 is a deficient number, since it is larger than the sum of its proper divisors (604350261).

1355205051 is a wasteful number, since it uses less digits than its factorization.

1355205051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156690 (or 156687 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 1355205051 is about 36813.1097708411. The cubic root of 1355205051 is about 1106.6280407096.

The spelling of 1355205051 in words is "one billion, three hundred fifty-five million, two hundred five thousand, fifty-one".