551211520245 has 16 divisors (see below), whose sum is σ = 890180850240. Its totient is φ = 291232004864.

The previous prime is 551211520231. The next prime is 551211520259. The reversal of 551211520245 is 542025112155.

It is an interprime number because it is at equal distance from previous prime (551211520231) and next prime (551211520259).

It is a cyclic number.

It is not a de Polignac number, because 551211520245 - 2¹⁶ = 551211454709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171715380 + ... + 171718589.

It is an arithmetic number, because the mean of its divisors is an integer number (55636303140).

Almost surely, 2^551211520245 is an apocalyptic number.

It is an amenable number.

551211520245 is a deficient number, since it is larger than the sum of its proper divisors (338969329995).

551211520245 is a wasteful number, since it uses less digits than its factorization.

551211520245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343434084.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 551211520245 in words is "five hundred fifty-one billion, two hundred eleven million, five hundred twenty thousand, two hundred forty-five".