55352015742021 has 16 divisors (see below), whose sum is σ = 75519580224000. Its totient is φ = 36042910066800.

The previous prime is 55352015741963. The next prime is 55352015742041. The reversal of 55352015742021 is 12024751025355.

It is a happy number.

It is not a de Polignac number, because 55352015742021 - 2⁹ = 55352015741509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55352015742041) 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, 17037480 + ... + 20024478.

It is an arithmetic number, because the mean of its divisors is an integer number (4719973764000).

Almost surely, 2^{55352015742021} is an apocalyptic number.

It is an amenable number.

55352015742021 is a deficient number, since it is larger than the sum of its proper divisors (20167564481979).

55352015742021 is a wasteful number, since it uses less digits than its factorization.

55352015742021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3130696.

The product of its (nonzero) digits is 420000, while the sum is 42.

Adding to 55352015742021 its reverse (12024751025355), we get a palindrome (67376766767376).

The spelling of 55352015742021 in words is "fifty-five trillion, three hundred fifty-two billion, fifteen million, seven hundred forty-two thousand, twenty-one".