1051220554 has 4 divisors (see below), whose sum is σ = 1576830834. Its totient is φ = 525610276.

The previous prime is 1051220539. The next prime is 1051220557. The reversal of 1051220554 is 4550221501.

1051220554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 970634025 + 80586529 = 31155^2 + 8977^2 .

It is a super-2 number, since 2×1051220554² = 2210129306304133832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051220557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262805137 + ... + 262805140.

Almost surely, 2^1051220554 is an apocalyptic number.

1051220554 is a deficient number, since it is larger than the sum of its proper divisors (525610280).

1051220554 is an equidigital number, since it uses as much as digits as its factorization.

1051220554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525610279.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1051220554 is about 32422.5315791349. The cubic root of 1051220554 is about 1016.7900349918.

The spelling of 1051220554 in words is "one billion, fifty-one million, two hundred twenty thousand, five hundred fifty-four".