1101621552 has 40 divisors (see below), whose sum is σ = 2847060336. Its totient is φ = 367051776.

The previous prime is 1101621527. The next prime is 1101621617. The reversal of 1101621552 is 2551261011.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 191908 + ... + 197564.

Almost surely, 2^1101621552 is an apocalyptic number.

1101621552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101621552 is an abundant number, since it is smaller than the sum of its proper divisors (1745438784).

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

1101621552 is a wasteful number, since it uses less digits than its factorization.

1101621552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9725 (or 9719 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 1101621552 is about 33190.6847172516. The cubic root of 1101621552 is about 1032.7871075899.

Adding to 1101621552 its reverse (2551261011), we get a palindrome (3652882563).

The spelling of 1101621552 in words is "one billion, one hundred one million, six hundred twenty-one thousand, five hundred fifty-two".