551000061001 has 16 divisors (see below), whose sum is σ = 607314843520. Its totient is φ = 496680387840.

The previous prime is 551000060977. The next prime is 551000061037. The reversal of 551000061001 is 100160000155.

It is not a de Polignac number, because 551000061001 - 2⁹ = 551000060489 is a prime.

It is a super-2 number, since 2×551000061001² (a number of 24 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 551000061001.

It is not an unprimeable number, because it can be changed into a prime (551000061061) 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, 2556721 + ... + 2763841.

It is an arithmetic number, because the mean of its divisors is an integer number (37957177720).

Almost surely, 2^551000061001 is an apocalyptic number.

It is an amenable number.

551000061001 is a deficient number, since it is larger than the sum of its proper divisors (56314782519).

551000061001 is a wasteful number, since it uses less digits than its factorization.

551000061001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211936.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 551000061001 its reverse (100160000155), we get a palindrome (651160061156).

The spelling of 551000061001 in words is "five hundred fifty-one billion, sixty-one thousand, one".