1055551098 has 128 divisors (see below), whose sum is σ = 2617049088. Its totient is φ = 277320384.

The previous prime is 1055551093. The next prime is 1055551139. The reversal of 1055551098 is 8901555501.

It is a super-2 number, since 2×1055551098² = 2228376240978011208, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1055551093) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3041761 + ... + 3042107.

It is an arithmetic number, because the mean of its divisors is an integer number (20445696).

Almost surely, 2^1055551098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055551098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308524544).

1055551098 is an abundant number, since it is smaller than the sum of its proper divisors (1561497990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1055551098 is a wasteful number, since it uses less digits than its factorization.

1055551098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496.

The product of its (nonzero) digits is 45000, while the sum is 39.

The square root of 1055551098 is about 32489.2458822916. The cubic root of 1055551098 is about 1018.1843574646.

The spelling of 1055551098 in words is "one billion, fifty-five million, five hundred fifty-one thousand, ninety-eight".