7457220061 has 2 divisors, whose sum is σ = 7457220062. Its totient is φ = 7457220060.

The previous prime is 7457220047. The next prime is 7457220101. The reversal of 7457220061 is 1600227547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5104388025 + 2352832036 = 71445^2 + 48506^2 .

It is an emirp because it is prime and its reverse (1600227547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7457220061 - 2¹⁵ = 7457187293 is a prime.

It is a super-2 number, since 2×7457220061² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7457219999 and 7457220026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7457220041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3728610030 + 3728610031.

It is an arithmetic number, because the mean of its divisors is an integer number (3728610031).

Almost surely, 2^7457220061 is an apocalyptic number.

It is an amenable number.

7457220061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7457220061 is an equidigital number, since it uses as much as digits as its factorization.

7457220061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 7457220061 is about 86355.1970700085. The cubic root of 7457220061 is about 1953.7049929739.

The spelling of 7457220061 in words is "seven billion, four hundred fifty-seven million, two hundred twenty thousand, sixty-one".