55124015540 has 48 divisors (see below), whose sum is σ = 127586055744. Its totient is φ = 19838438400.

The previous prime is 55124015537. The next prime is 55124015543. The reversal of 55124015540 is 4551042155.

It is an interprime number because it is at equal distance from previous prime (55124015537) and next prime (55124015543).

It is a super-2 number, since 2×55124015540² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55124015497 and 55124015506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55124015543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1270226 + ... + 1312905.

It is an arithmetic number, because the mean of its divisors is an integer number (2658042828).

Almost surely, 2^55124015540 is an apocalyptic number.

It is an amenable number.

55124015540 is an abundant number, since it is smaller than the sum of its proper divisors (72462040204).

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

55124015540 is a wasteful number, since it uses less digits than its factorization.

55124015540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583248 (or 2583246 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 55124015540 its reverse (4551042155), we get a palindrome (59675057695).

The spelling of 55124015540 in words is "fifty-five billion, one hundred twenty-four million, fifteen thousand, five hundred forty".