1072157977 has 4 divisors (see below), whose sum is σ = 1169626896. Its totient is φ = 974689060.

The previous prime is 1072157963. The next prime is 1072157987. The reversal of 1072157977 is 7797512701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1072157977 is a prime.

It is a super-2 number, since 2×1072157977² = 2299045455289465058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1072157987) 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, 48734443 + ... + 48734464.

It is an arithmetic number, because the mean of its divisors is an integer number (292406724).

Almost surely, 2^1072157977 is an apocalyptic number.

It is an amenable number.

1072157977 is a deficient number, since it is larger than the sum of its proper divisors (97468919).

1072157977 is an equidigital number, since it uses as much as digits as its factorization.

1072157977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97468918.

The product of its (nonzero) digits is 216090, while the sum is 46.

The square root of 1072157977 is about 32743.8234939049. The cubic root of 1072157977 is about 1023.4962608332.

The spelling of 1072157977 in words is "one billion, seventy-two million, one hundred fifty-seven thousand, nine hundred seventy-seven".