1521342610 has 16 divisors (see below), whose sum is σ = 2832845400. Its totient is φ = 587552896.

The previous prime is 1521342587. The next prime is 1521342619. The reversal of 1521342610 is 162431251.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1047104881 + 474237729 = 32359^2 + 21777^2 .

It is a super-2 number, since 2×1521342610² = 4628966674003224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1521342619) 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, 2622715 + ... + 2623294.

Almost surely, 2^1521342610 is an apocalyptic number.

1521342610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1521342610 is a deficient number, since it is larger than the sum of its proper divisors (1311502790).

1521342610 is a wasteful number, since it uses less digits than its factorization.

1521342610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246045.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1521342610 is about 39004.3921885728. The cubic root of 1521342610 is about 1150.1178480363.

Adding to 1521342610 its reverse (162431251), we get a palindrome (1683773861).

The spelling of 1521342610 in words is "one billion, five hundred twenty-one million, three hundred forty-two thousand, six hundred ten".