10533021551 has 16 divisors (see below), whose sum is σ = 12214087200. Its totient is φ = 8995749888.

The previous prime is 10533021539. The next prime is 10533021571. The reversal of 10533021551 is 15512033501.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 10533021551 - 2²⁶ = 10465912687 is a prime.

It is a super-2 number, since 2×10533021551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10533021551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10533021571) 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, 390866 + ... + 416943.

It is an arithmetic number, because the mean of its divisors is an integer number (763380450).

Almost surely, 2^10533021551 is an apocalyptic number.

10533021551 is a deficient number, since it is larger than the sum of its proper divisors (1681065649).

10533021551 is a wasteful number, since it uses less digits than its factorization.

10533021551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807898.

The product of its (nonzero) digits is 2250, while the sum is 26.

The spelling of 10533021551 in words is "ten billion, five hundred thirty-three million, twenty-one thousand, five hundred fifty-one".