1545455 has 4 divisors (see below), whose sum is σ = 1854552. Its totient is φ = 1236360.

The previous prime is 1545449. The next prime is 1545461. The reversal of 1545455 is 5545451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5545451 = 17 ⋅326203.

It is an interprime number because it is at equal distance from previous prime (1545449) and next prime (1545461).

It is not a de Polignac number, because 1545455 - 2⁶ = 1545391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154541 + ... + 154550.

It is an arithmetic number, because the mean of its divisors is an integer number (463638).

2^1545455 is an apocalyptic number.

1545455 is a deficient number, since it is larger than the sum of its proper divisors (309097).

1545455 is an equidigital number, since it uses as much as digits as its factorization.

1545455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309096.

The product of its digits is 10000, while the sum is 29.

The square root of 1545455 is about 1243.1633038342. The cubic root of 1545455 is about 115.6162257768.

The spelling of 1545455 in words is "one million, five hundred forty-five thousand, four hundred fifty-five".