137484482521 has 9 divisors (see below), whose sum is σ = 140772477429. Its totient is φ = 134271595836.

The previous prime is 137484482491. The next prime is 137484482533. The reversal of 137484482521 is 125284484731.

The square root of 137484482521 is 370789.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 137484482521 - 2¹¹ = 137484480473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137484482321) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15939616 + ... + 15948238.

It is an arithmetic number, because the mean of its divisors is an integer number (15641386381).

Almost surely, 2^137484482521 is an apocalyptic number.

137484482521 is the 370789-th square number.

137484482521 is the 185395-th centered octagonal number.

It is an amenable number.

137484482521 is a deficient number, since it is larger than the sum of its proper divisors (3287994908).

137484482521 is an frugal number, since it uses more digits than its factorization.

137484482521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17332 (or 8666 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 49.

Multiplying 137484482521 by its sum of digits (49), we get a square (6736739643529 = 2595523²).

The spelling of 137484482521 in words is "one hundred thirty-seven billion, four hundred eighty-four million, four hundred eighty-two thousand, five hundred twenty-one".