531430055 has 16 divisors (see below), whose sum is σ = 708927744. Its totient is φ = 379779840.

The previous prime is 531430049. The next prime is 531430061. The reversal of 531430055 is 550034135.

It is an interprime number because it is at equal distance from previous prime (531430049) and next prime (531430061).

It is a de Polignac number, because none of the positive numbers 2^k-531430055 is a prime.

It is a Duffinian number.

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, 129854 + ... + 133883.

It is an arithmetic number, because the mean of its divisors is an integer number (44307984).

Almost surely, 2^531430055 is an apocalyptic number.

531430055 is a deficient number, since it is larger than the sum of its proper divisors (177497689).

531430055 is a wasteful number, since it uses less digits than its factorization.

531430055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263786.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 531430055 is about 23052.7667536892. The cubic root of 531430055 is about 809.9944393257.

The spelling of 531430055 in words is "five hundred thirty-one million, four hundred thirty thousand, fifty-five".