1101552540 has 72 divisors (see below), whose sum is σ = 3390255120. Its totient is φ = 267041280.

The previous prime is 1101552523. The next prime is 1101552563. The reversal of 1101552540 is 452551011.

It is a self number, because there is not a number n which added to its sum of digits gives 1101552540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68605 + ... + 83124.

Almost surely, 2^1101552540 is an apocalyptic number.

1101552540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101552540 is an abundant number, since it is smaller than the sum of its proper divisors (2288702580).

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

1101552540 is a wasteful number, since it uses less digits than its factorization.

1101552540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151763 (or 151750 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 24.

The square root of 1101552540 is about 33189.6450719196. The cubic root of 1101552540 is about 1032.7655405366.

The spelling of 1101552540 in words is "one billion, one hundred one million, five hundred fifty-two thousand, five hundred forty".