1521052197 has 8 divisors (see below), whose sum is σ = 2317793856. Its totient is φ = 869172672.

The previous prime is 1521052189. The next prime is 1521052229. The reversal of 1521052197 is 7912501251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1521052197 - 2³ = 1521052189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521032197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36215508 + ... + 36215549.

It is an arithmetic number, because the mean of its divisors is an integer number (289724232).

Almost surely, 2^1521052197 is an apocalyptic number.

It is an amenable number.

1521052197 is a deficient number, since it is larger than the sum of its proper divisors (796741659).

1521052197 is an equidigital number, since it uses as much as digits as its factorization.

1521052197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72431067.

The product of its (nonzero) digits is 6300, while the sum is 33.

The square root of 1521052197 is about 39000.6691865665. The cubic root of 1521052197 is about 1150.0446603954.

The spelling of 1521052197 in words is "one billion, five hundred twenty-one million, fifty-two thousand, one hundred ninety-seven".