1220552045 has 8 divisors (see below), whose sum is σ = 1465289880. Its totient is φ = 976023360.

The previous prime is 1220552023. The next prime is 1220552051. The reversal of 1220552045 is 5402550221.

It can be written as a sum of positive squares in 4 ways, for example, as 26020201 + 1194531844 = 5101^2 + 34562^2 .

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

It is not a de Polignac number, because 1220552045 - 2²² = 1216357741 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39146 + ... + 63035.

It is an arithmetic number, because the mean of its divisors is an integer number (183161235).

Almost surely, 2^1220552045 is an apocalyptic number.

It is an amenable number.

1220552045 is a deficient number, since it is larger than the sum of its proper divisors (244737835).

1220552045 is a wasteful number, since it uses less digits than its factorization.

1220552045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104575.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1220552045 is about 34936.4000005725. The cubic root of 1220552045 is about 1068.6908742869.

The spelling of 1220552045 in words is "one billion, two hundred twenty million, five hundred fifty-two thousand, forty-five".