2455061221 has 8 divisors (see below), whose sum is σ = 2514352544. Its totient is φ = 2395869840.

The previous prime is 2455061197. The next prime is 2455061243. The reversal of 2455061221 is 1221605542.

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 2455061221 - 2¹⁹ = 2454536933 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 2455061221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2455067221) 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, 25975 + ... + 74731.

It is an arithmetic number, because the mean of its divisors is an integer number (314294068).

Almost surely, 2^2455061221 is an apocalyptic number.

It is an amenable number.

2455061221 is a deficient number, since it is larger than the sum of its proper divisors (59291323).

2455061221 is a wasteful number, since it uses less digits than its factorization.

2455061221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49971.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 2455061221 is about 49548.5743589056. The cubic root of 2455061221 is about 1349.0274148947.

Adding to 2455061221 its reverse (1221605542), we get a palindrome (3676666763).

The spelling of 2455061221 in words is "two billion, four hundred fifty-five million, sixty-one thousand, two hundred twenty-one".