55321242450431 has 8 divisors (see below), whose sum is σ = 56079230836464. Its totient is φ = 54563258473920.

The previous prime is 55321242450427. The next prime is 55321242450517. The reversal of 55321242450431 is 13405424212355.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55321242450431 - 2² = 55321242450427 is a prime.

It is a super-2 number, since 2×55321242450431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55321242450731) 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, 30214316 + ... + 31992926.

It is an arithmetic number, because the mean of its divisors is an integer number (7009903854558).

Almost surely, 2^{55321242450431} is an apocalyptic number.

55321242450431 is a deficient number, since it is larger than the sum of its proper divisors (757988386033).

55321242450431 is a wasteful number, since it uses less digits than its factorization.

55321242450431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204761.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 55321242450431 its reverse (13405424212355), we get a palindrome (68726666662786).

The spelling of 55321242450431 in words is "fifty-five trillion, three hundred twenty-one billion, two hundred forty-two million, four hundred fifty thousand, four hundred thirty-one".