1355025051 has 16 divisors (see below), whose sum is σ = 2034946720. Its totient is φ = 890974080.

The previous prime is 1355025011. The next prime is 1355025101. The reversal of 1355025051 is 1505205531.

1355025051 is a `hidden beast` number, since 13 + 550 + 2 + 50 + 51 = 666.

It is not a de Polignac number, because 1355025051 - 2²¹ = 1352927899 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1355025011) 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, 341770 + ... + 345711.

It is an arithmetic number, because the mean of its divisors is an integer number (127184170).

Almost surely, 2^1355025051 is an apocalyptic number.

1355025051 is a deficient number, since it is larger than the sum of its proper divisors (679921669).

1355025051 is an equidigital number, since it uses as much as digits as its factorization.

1355025051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687563 (or 687557 counting only the distinct ones).

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

The square root of 1355025051 is about 36810.6649084202. The cubic root of 1355025051 is about 1106.5790439750.

The spelling of 1355025051 in words is "one billion, three hundred fifty-five million, twenty-five thousand, fifty-one".