55402135231532 has 24 divisors (see below), whose sum is σ = 97115647183632. Its totient is φ = 27654810955200.

The previous prime is 55402135231501. The next prime is 55402135231537. The reversal of 55402135231532 is 23513253120455.

It is a self number, because there is not a number n which added to its sum of digits gives 55402135231532.

It is not an unprimeable number, because it can be changed into a prime (55402135231537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65121782 + ... + 65967042.

It is an arithmetic number, because the mean of its divisors is an integer number (4046485299318).

Almost surely, 2^{55402135231532} is an apocalyptic number.

It is an amenable number.

55402135231532 is a deficient number, since it is larger than the sum of its proper divisors (41713511952100).

55402135231532 is a wasteful number, since it uses less digits than its factorization.

55402135231532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872609 (or 872607 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 41.

Adding to 55402135231532 its reverse (23513253120455), we get a palindrome (78915388351987).

The spelling of 55402135231532 in words is "fifty-five trillion, four hundred two billion, one hundred thirty-five million, two hundred thirty-one thousand, five hundred thirty-two".