1540601 has 4 divisors (see below), whose sum is σ = 1543332. Its totient is φ = 1537872.

The previous prime is 1540573. The next prime is 1540603. The reversal of 1540601 is 1060451.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 900601 + 640000 = 949^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1540601 - 2¹⁴ = 1524217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1540601.

It is not an unprimeable number, because it can be changed into a prime (1540603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170 + ... + 1763.

It is an arithmetic number, because the mean of its divisors is an integer number (385833).

2^1540601 is an apocalyptic number.

It is an amenable number.

1540601 is a deficient number, since it is larger than the sum of its proper divisors (2731).

1540601 is an equidigital number, since it uses as much as digits as its factorization.

1540601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1540601 is about 1241.2094907791. The cubic root of 1540601 is about 115.4950554782.

The spelling of 1540601 in words is "one million, five hundred forty thousand, six hundred one".