1542545 has 4 divisors (see below), whose sum is σ = 1851060. Its totient is φ = 1234032.

The previous prime is 1542533. The next prime is 1542551. The reversal of 1542545 is 5452451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5452451 = 211 ⋅25841.

It can be written as a sum of positive squares in 2 ways, for example, as 1183744 + 358801 = 1088^2 + 599^2 .

It is a cyclic number.

It is not a de Polignac number, because 1542545 - 2¹⁸ = 1280401 is a prime.

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, 154250 + ... + 154259.

It is an arithmetic number, because the mean of its divisors is an integer number (462765).

2^1542545 is an apocalyptic number.

It is an amenable number.

1542545 is a deficient number, since it is larger than the sum of its proper divisors (308515).

1542545 is an equidigital number, since it uses as much as digits as its factorization.

1542545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308514.

The product of its digits is 4000, while the sum is 26.

The square root of 1542545 is about 1241.9923510231. The cubic root of 1542545 is about 115.5436140205.

Adding to 1542545 its reverse (5452451), we get a palindrome (6994996).

The spelling of 1542545 in words is "one million, five hundred forty-two thousand, five hundred forty-five".