1455022157 has 4 divisors (see below), whose sum is σ = 1455100956. Its totient is φ = 1454943360.

The previous prime is 1455022139. The next prime is 1455022171. The reversal of 1455022157 is 7512205541.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 133772356 + 1321249801 = 11566^2 + 36349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455022157 - 2¹⁶ = 1454956621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1455024157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4907 + ... + 54167.

It is an arithmetic number, because the mean of its divisors is an integer number (363775239).

Almost surely, 2^1455022157 is an apocalyptic number.

It is an amenable number.

1455022157 is a deficient number, since it is larger than the sum of its proper divisors (78799).

1455022157 is an equidigital number, since it uses as much as digits as its factorization.

1455022157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78798.

The product of its (nonzero) digits is 14000, while the sum is 32.

The square root of 1455022157 is about 38144.7526797592. The cubic root of 1455022157 is about 1133.1564337410.

Adding to 1455022157 its reverse (7512205541), we get a palindrome (8967227698).

The spelling of 1455022157 in words is "one billion, four hundred fifty-five million, twenty-two thousand, one hundred fifty-seven".