55231404153542 has 64 divisors (see below), whose sum is σ = 85176140073984. Its totient is φ = 26847967829760.

The previous prime is 55231404153529. The next prime is 55231404153547. The reversal of 55231404153542 is 24535140413255.

It is a happy number.

It is a super-2 number, since 2×55231404153542² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55231404153493 and 55231404153502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55231404153547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13715270933 + ... + 13715274959.

It is an arithmetic number, because the mean of its divisors is an integer number (1330877188656).

Almost surely, 2^{55231404153542} is an apocalyptic number.

55231404153542 is a deficient number, since it is larger than the sum of its proper divisors (29944735920442).

55231404153542 is a wasteful number, since it uses less digits than its factorization.

55231404153542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5853.

The product of its (nonzero) digits is 1440000, while the sum is 44.

Adding to 55231404153542 its reverse (24535140413255), we get a palindrome (79766544566797).

The spelling of 55231404153542 in words is "fifty-five trillion, two hundred thirty-one billion, four hundred four million, one hundred fifty-three thousand, five hundred forty-two".