1555125043 has 2 divisors, whose sum is σ = 1555125044. Its totient is φ = 1555125042.

The previous prime is 1555124983. The next prime is 1555125067. The reversal of 1555125043 is 3405215551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1555125043 - 2¹⁷ = 1554993971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1555124996 and 1555125014.

It is not a weakly prime, because it can be changed into another prime (1555125343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777562521 + 777562522.

It is an arithmetic number, because the mean of its divisors is an integer number (777562522).

Almost surely, 2^1555125043 is an apocalyptic number.

1555125043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555125043 is an equidigital number, since it uses as much as digits as its factorization.

1555125043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 1555125043 is about 39435.0737668893. The cubic root of 1555125043 is about 1158.5686474963.

The spelling of 1555125043 in words is "one billion, five hundred fifty-five million, one hundred twenty-five thousand, forty-three".