1405555051 has 2 divisors, whose sum is σ = 1405555052. Its totient is φ = 1405555050.

The previous prime is 1405555033. The next prime is 1405555079. The reversal of 1405555051 is 1505555041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1405555051 is a prime.

It is a super-2 number, since 2×1405555051² = 3951170002783225202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1405555451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702777525 + 702777526.

It is an arithmetic number, because the mean of its divisors is an integer number (702777526).

Almost surely, 2^1405555051 is an apocalyptic number.

1405555051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405555051 is an equidigital number, since it uses as much as digits as its factorization.

1405555051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12500, while the sum is 31.

The square root of 1405555051 is about 37490.7328682703. The cubic root of 1405555051 is about 1120.1666022890.

The spelling of 1405555051 in words is "one billion, four hundred five million, five hundred fifty-five thousand, fifty-one".