2355515540 has 24 divisors (see below), whose sum is σ = 5653237632. Its totient is φ = 807605280.

The previous prime is 2355515531. The next prime is 2355515567. The reversal of 2355515540 is 455155532.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2355515540.

It is a congruent number.

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, 8412416 + ... + 8412695.

It is an arithmetic number, because the mean of its divisors is an integer number (235551568).

Almost surely, 2^2355515540 is an apocalyptic number.

2355515540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2355515540 is an abundant number, since it is smaller than the sum of its proper divisors (3297722092).

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

2355515540 is a wasteful number, since it uses less digits than its factorization.

2355515540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16825127 (or 16825125 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 35.

The square root of 2355515540 is about 48533.6536848402. The cubic root of 2355515540 is about 1330.5422139553.

The spelling of 2355515540 in words is "two billion, three hundred fifty-five million, five hundred fifteen thousand, five hundred forty".