481616551 has 8 divisors (see below), whose sum is σ = 525770000. Its totient is φ = 438478272.

The previous prime is 481616549. The next prime is 481616557. The reversal of 481616551 is 155616184.

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

It is a cyclic number.

It is not a de Polignac number, because 481616551 - 2¹ = 481616549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 481616551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481616557) 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, 252801 + ... + 254698.

It is an arithmetic number, because the mean of its divisors is an integer number (65721250).

Almost surely, 2^481616551 is an apocalyptic number.

481616551 is a deficient number, since it is larger than the sum of its proper divisors (44153449).

481616551 is a wasteful number, since it uses less digits than its factorization.

481616551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507585.

The product of its digits is 28800, while the sum is 37.

The square root of 481616551 is about 21945.7638509121. The cubic root of 481616551 is about 783.8515132289.

The spelling of 481616551 in words is "four hundred eighty-one million, six hundred sixteen thousand, five hundred fifty-one".