1555051 has 2 divisors, whose sum is σ = 1555052. Its totient is φ = 1555050.

The previous prime is 1555039. The next prime is 1555061. The reversal of 1555051 is 1505551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1555051 - 2¹⁷ = 1423979 is a prime.

It is a super-2 number, since 2×1555051² = 4836367225202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1555061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777525 + 777526.

It is an arithmetic number, because the mean of its divisors is an integer number (777526).

2^1555051 is an apocalyptic number.

1555051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555051 is an equidigital number, since it uses as much as digits as its factorization.

1555051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 625, while the sum is 22.

The square root of 1555051 is about 1247.0168403033. The cubic root of 1555051 is about 115.8550259852.

The spelling of 1555051 in words is "one million, five hundred fifty-five thousand, fifty-one".