60904521 has 8 divisors (see below), whose sum is σ = 90228960. Its totient is φ = 40602996.

The previous prime is 60904511. The next prime is 60904531. The reversal of 60904521 is 12540906.

60904521 is a `hidden beast` number, since 609 + 0 + 4 + 52 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (60904511) and next prime (60904531).

It is not a de Polignac number, because 60904521 - 2⁹ = 60904009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2255723 = 60904521 / (6 + 0 + 9 + 0 + 4 + 5 + 2 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (60904511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1127835 + ... + 1127888.

It is an arithmetic number, because the mean of its divisors is an integer number (11278620).

Almost surely, 2^60904521 is an apocalyptic number.

It is an amenable number.

60904521 is a deficient number, since it is larger than the sum of its proper divisors (29324439).

60904521 is a wasteful number, since it uses less digits than its factorization.

60904521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255732 (or 2255726 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 60904521 is about 7804.1348655697. The cubic root of 60904521 is about 393.4442270075. Note that the first 3 decimals are identical.

It can be divided in two parts, 60904 and 521, that added together give a triangular number (61425 = T₃₅₀).

The spelling of 60904521 in words is "sixty million, nine hundred four thousand, five hundred twenty-one".