531355401 has 6 divisors (see below), whose sum is σ = 767513370. Its totient is φ = 354236928.

The previous prime is 531355399. The next prime is 531355477. The reversal of 531355401 is 104553135.

It can be written as a sum of positive squares in only one way, i.e., 517517001 + 13838400 = 22749^2 + 3720^2 .

It is not a de Polignac number, because 531355401 - 2¹ = 531355399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531355481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29519736 + ... + 29519753.

It is an arithmetic number, because the mean of its divisors is an integer number (127918895).

Almost surely, 2^531355401 is an apocalyptic number.

It is an amenable number.

531355401 is a deficient number, since it is larger than the sum of its proper divisors (236157969).

531355401 is a wasteful number, since it uses less digits than its factorization.

531355401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59039495 (or 59039492 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 531355401 is about 23051.1474985520. The cubic root of 531355401 is about 809.9565088674.

The spelling of 531355401 in words is "five hundred thirty-one million, three hundred fifty-five thousand, four hundred one".