552635231421 has 48 divisors (see below), whose sum is σ = 925216240704. Its totient is φ = 290826256896.

The previous prime is 552635231389. The next prime is 552635231431. The reversal of 552635231421 is 124132536255.

It is not a de Polignac number, because 552635231421 - 2⁵ = 552635231389 is a prime.

It is a super-3 number, since 3×552635231421³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 552635231421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552635231431) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 493530 + ... + 1161396.

It is an arithmetic number, because the mean of its divisors is an integer number (19275338348).

Almost surely, 2^552635231421 is an apocalyptic number.

It is an amenable number.

552635231421 is a deficient number, since it is larger than the sum of its proper divisors (372581009283).

552635231421 is a wasteful number, since it uses less digits than its factorization.

552635231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668330 (or 668323 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

Adding to 552635231421 its reverse (124132536255), we get a palindrome (676767767676).

The spelling of 552635231421 in words is "five hundred fifty-two billion, six hundred thirty-five million, two hundred thirty-one thousand, four hundred twenty-one".