748212521 has 8 divisors (see below), whose sum is σ = 855269184. Its totient is φ = 641198160.

The previous prime is 748212473. The next prime is 748212523. The reversal of 748212521 is 125212847.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-748212521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (748212523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52151 + ... + 64931.

It is an arithmetic number, because the mean of its divisors is an integer number (106908648).

Almost surely, 2^748212521 is an apocalyptic number.

It is an amenable number.

748212521 is a deficient number, since it is larger than the sum of its proper divisors (107056663).

748212521 is a wasteful number, since it uses less digits than its factorization.

748212521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21151.

The product of its digits is 8960, while the sum is 32.

The square root of 748212521 is about 27353.4736550954. The cubic root of 748212521 is about 907.8379300385.

The spelling of 748212521 in words is "seven hundred forty-eight million, two hundred twelve thousand, five hundred twenty-one".