1555065345 has 16 divisors (see below), whose sum is σ = 2522189952. Its totient is φ = 818006400.

The previous prime is 1555065319. The next prime is 1555065349. The reversal of 1555065345 is 5435605551.

It is not a de Polignac number, because 1555065345 - 2⁵ = 1555065313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1555065349) 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, 708981 + ... + 711170.

It is an arithmetic number, because the mean of its divisors is an integer number (157636872).

Almost surely, 2^1555065345 is an apocalyptic number.

1555065345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1555065345 is a deficient number, since it is larger than the sum of its proper divisors (967124607).

1555065345 is a wasteful number, since it uses less digits than its factorization.

1555065345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420232.

The product of its (nonzero) digits is 225000, while the sum is 39.

The square root of 1555065345 is about 39434.3168445962. The cubic root of 1555065345 is about 1158.5538222970.

The spelling of 1555065345 in words is "one billion, five hundred fifty-five million, sixty-five thousand, three hundred forty-five".