1051955520 has 672 divisors, whose sum is σ = 4503237120. Its totient is φ = 205148160.

The previous prime is 1051955503. The next prime is 1051955521. The reversal of 1051955520 is 255591501.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×1051955520² = 2213220832116940800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051955521) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9831307 + ... + 9831413.

Almost surely, 2^1051955520 is an apocalyptic number.

1051955520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1051955520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2251618560).

1051955520 is an abundant number, since it is smaller than the sum of its proper divisors (3451281600).

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

1051955520 is a wasteful number, since it uses less digits than its factorization.

1051955520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 33.

The square root of 1051955520 is about 32433.8637846310. The cubic root of 1051955520 is about 1017.0269443663.

The spelling of 1051955520 in words is "one billion, fifty-one million, nine hundred fifty-five thousand, five hundred twenty".