551450153432531 has 4 divisors (see below), whose sum is σ = 551470713846864. Its totient is φ = 551429593018200.

The previous prime is 551450153432447. The next prime is 551450153432539. The reversal of 551450153432531 is 135234351054155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551450153432531 is a prime.

It is a super-2 number, since 2×551450153432531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551450153432539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10280166935 + ... + 10280220576.

It is an arithmetic number, because the mean of its divisors is an integer number (137867678461716).

Almost surely, 2^{551450153432531} is an apocalyptic number.

551450153432531 is a deficient number, since it is larger than the sum of its proper divisors (20560414333).

551450153432531 is a wasteful number, since it uses less digits than its factorization.

551450153432531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20560414332.

The product of its (nonzero) digits is 2700000, while the sum is 47.

The spelling of 551450153432531 in words is "five hundred fifty-one trillion, four hundred fifty billion, one hundred fifty-three million, four hundred thirty-two thousand, five hundred thirty-one".