1157020453 has 8 divisors (see below), whose sum is σ = 1200775680. Its totient is φ = 1113522480.

The previous prime is 1157020421. The next prime is 1157020457. The reversal of 1157020453 is 3540207511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1157020453 - 2⁵ = 1157020421 is a prime.

It is a super-3 number, since 3×1157020453³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157020457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55125 + ... + 73162.

It is an arithmetic number, because the mean of its divisors is an integer number (150096960).

Almost surely, 2^1157020453 is an apocalyptic number.

It is an amenable number.

1157020453 is a deficient number, since it is larger than the sum of its proper divisors (43755227).

1157020453 is a wasteful number, since it uses less digits than its factorization.

1157020453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128627.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1157020453 is about 34015.0033514624. The cubic root of 1157020453 is about 1049.8171875229.

Adding to 1157020453 its reverse (3540207511), we get a palindrome (4697227964).

It can be divided in two parts, 11570 and 20453, that added together give a palindrome (32023).

The spelling of 1157020453 in words is "one billion, one hundred fifty-seven million, twenty thousand, four hundred fifty-three".