55033521431 has 8 divisors (see below), whose sum is σ = 63073629984. Its totient is φ = 47037957120.

The previous prime is 55033521409. The next prime is 55033521449. The reversal of 55033521431 is 13412533055.

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

It is not a de Polignac number, because 55033521431 - 2¹⁸ = 55033259287 is a prime.

It is a super-2 number, since 2×55033521431² (a number of 22 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 (55033520431) 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, 11133410 + ... + 11138351.

It is an arithmetic number, because the mean of its divisors is an integer number (7884203748).

Almost surely, 2^55033521431 is an apocalyptic number.

55033521431 is a deficient number, since it is larger than the sum of its proper divisors (8040108553).

55033521431 is a wasteful number, since it uses less digits than its factorization.

55033521431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22272121.

The product of its (nonzero) digits is 27000, while the sum is 32.

The spelling of 55033521431 in words is "fifty-five billion, thirty-three million, five hundred twenty-one thousand, four hundred thirty-one".