53401221532554 has 128 divisors (see below), whose sum is σ = 123768378777600. Its totient is φ = 15044462484480.

The previous prime is 53401221532537. The next prime is 53401221532621. The reversal of 53401221532554 is 45523512210435.

It is a super-2 number, since 2×53401221532554² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13633192204 + ... + 13633196120.

It is an arithmetic number, because the mean of its divisors is an integer number (966940459200).

Almost surely, 2^{53401221532554} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53401221532554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61884189388800).

53401221532554 is an abundant number, since it is smaller than the sum of its proper divisors (70367157245046).

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

53401221532554 is a wasteful number, since it uses less digits than its factorization.

53401221532554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8388.

The product of its (nonzero) digits is 720000, while the sum is 42.

Adding to 53401221532554 its reverse (45523512210435), we get a palindrome (98924733742989).

The spelling of 53401221532554 in words is "fifty-three trillion, four hundred one billion, two hundred twenty-one million, five hundred thirty-two thousand, five hundred fifty-four".