1122551401 has 8 divisors (see below), whose sum is σ = 1161765000. Its totient is φ = 1083371520.

The previous prime is 1122551389. The next prime is 1122551477. The reversal of 1122551401 is 1041552211.

It can be written as a sum of positive squares in 4 ways, for example, as 145926400 + 976625001 = 12080^2 + 31251^2 .

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 1122551401 - 2¹³ = 1122543209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122554401) 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, 72681 + ... + 86761.

It is an arithmetic number, because the mean of its divisors is an integer number (145220625).

Almost surely, 2^1122551401 is an apocalyptic number.

It is an amenable number.

1122551401 is a deficient number, since it is larger than the sum of its proper divisors (39213599).

1122551401 is a wasteful number, since it uses less digits than its factorization.

1122551401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16859.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 1122551401 is about 33504.4982203883. The cubic root of 1122551401 is about 1039.2868017657.

It can be divided in two parts, 11225 and 51401, that added together give a palindrome (62626).

The spelling of 1122551401 in words is "one billion, one hundred twenty-two million, five hundred fifty-one thousand, four hundred one".