102072457 has 2 divisors, whose sum is σ = 102072458. Its totient is φ = 102072456.

The previous prime is 102072401. The next prime is 102072461. The reversal of 102072457 is 754270201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64176121 + 37896336 = 8011^2 + 6156^2 .

It is a cyclic number.

It is not a de Polignac number, because 102072457 - 2¹⁵ = 102039689 is a prime.

It is not a weakly prime, because it can be changed into another prime (102012457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51036228 + 51036229.

It is an arithmetic number, because the mean of its divisors is an integer number (51036229).

Almost surely, 2^102072457 is an apocalyptic number.

It is an amenable number.

102072457 is a deficient number, since it is larger than the sum of its proper divisors (1).

102072457 is an equidigital number, since it uses as much as digits as its factorization.

102072457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 102072457 is about 10103.0914575688. The cubic root of 102072457 is about 467.3434815909.

The spelling of 102072457 in words is "one hundred two million, seventy-two thousand, four hundred fifty-seven".