545521251437 has 2 divisors, whose sum is σ = 545521251438. Its totient is φ = 545521251436.

The previous prime is 545521251427. The next prime is 545521251461. The reversal of 545521251437 is 734152125545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545513710921 + 7540516 = 738589^2 + 2746^2 .

It is a cyclic number.

It is not a de Polignac number, because 545521251437 - 2¹⁰ = 545521250413 is a prime.

It is a super-3 number, since 3×545521251437³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545521251427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272760625718 + 272760625719.

It is an arithmetic number, because the mean of its divisors is an integer number (272760625719).

Almost surely, 2^545521251437 is an apocalyptic number.

It is an amenable number.

545521251437 is a deficient number, since it is larger than the sum of its proper divisors (1).

545521251437 is an equidigital number, since it uses as much as digits as its factorization.

545521251437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840000, while the sum is 44.

The spelling of 545521251437 in words is "five hundred forty-five billion, five hundred twenty-one million, two hundred fifty-one thousand, four hundred thirty-seven".