802451457 has 12 divisors (see below), whose sum is σ = 1160880084. Its totient is φ = 534144480.

The previous prime is 802451417. The next prime is 802451471. The reversal of 802451457 is 754154208.

It can be written as a sum of positive squares in 2 ways, for example, as 104223681 + 698227776 = 10209^2 + 26424^2 .

It is not a de Polignac number, because 802451457 - 2¹² = 802447361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (802451417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62394 + ... + 74147.

It is an arithmetic number, because the mean of its divisors is an integer number (96740007).

Almost surely, 2^802451457 is an apocalyptic number.

It is an amenable number.

802451457 is a deficient number, since it is larger than the sum of its proper divisors (358428627).

802451457 is a wasteful number, since it uses less digits than its factorization.

802451457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137200 (or 137197 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 802451457 is about 28327.5741460507. The cubic root of 802451457 is about 929.2650211030.

The spelling of 802451457 in words is "eight hundred two million, four hundred fifty-one thousand, four hundred fifty-seven".