1541506201 has 4 divisors (see below), whose sum is σ = 1542246912. Its totient is φ = 1540765492.

The previous prime is 1541506193. The next prime is 1541506259. The reversal of 1541506201 is 1026051451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1026051451 = 197 ⋅5208383.

It is a cyclic number.

It is not a de Polignac number, because 1541506201 - 2³ = 1541506193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1041506201) 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, 367225 + ... + 371398.

It is an arithmetic number, because the mean of its divisors is an integer number (385561728).

Almost surely, 2^1541506201 is an apocalyptic number.

It is an amenable number.

1541506201 is a deficient number, since it is larger than the sum of its proper divisors (740711).

1541506201 is an equidigital number, since it uses as much as digits as its factorization.

1541506201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740710.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1541506201 is about 39262.0198283277. The cubic root of 1541506201 is about 1155.1767127781.

Adding to 1541506201 its reverse (1026051451), we get a palindrome (2567557652).

The spelling of 1541506201 in words is "one billion, five hundred forty-one million, five hundred six thousand, two hundred one".