7356552421 has 2 divisors, whose sum is σ = 7356552422. Its totient is φ = 7356552420.

The previous prime is 7356552403. The next prime is 7356552439. The reversal of 7356552421 is 1242556537.

It is a balanced prime because it is at equal distance from previous prime (7356552403) and next prime (7356552439).

It can be written as a sum of positive squares in only one way, i.e., 6446323521 + 910228900 = 80289^2 + 30170^2 .

It is a cyclic number.

It is not a de Polignac number, because 7356552421 - 2¹⁹ = 7356028133 is a prime.

It is a super-2 number, since 2×7356552421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7356558421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3678276210 + 3678276211.

It is an arithmetic number, because the mean of its divisors is an integer number (3678276211).

Almost surely, 2^7356552421 is an apocalyptic number.

It is an amenable number.

7356552421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7356552421 is an equidigital number, since it uses as much as digits as its factorization.

7356552421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 40.

The square root of 7356552421 is about 85770.3469795943. The cubic root of 7356552421 is about 1944.8738842765.

The spelling of 7356552421 in words is "seven billion, three hundred fifty-six million, five hundred fifty-two thousand, four hundred twenty-one".