1077475021 has 4 divisors (see below), whose sum is σ = 1231400032. Its totient is φ = 923550012.

The previous prime is 1077475013. The next prime is 1077475031. The reversal of 1077475021 is 1205747701.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1205747701 = 26099 ⋅46199.

It is not a de Polignac number, because 1077475021 - 2³ = 1077475013 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 (1077475031) 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, 76962495 + ... + 76962508.

It is an arithmetic number, because the mean of its divisors is an integer number (307850008).

Almost surely, 2^1077475021 is an apocalyptic number.

It is an amenable number.

1077475021 is a deficient number, since it is larger than the sum of its proper divisors (153925011).

1077475021 is an equidigital number, since it uses as much as digits as its factorization.

1077475021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153925010.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 1077475021 is about 32824.9146381221. The cubic root of 1077475021 is about 1025.1853786462.

The spelling of 1077475021 in words is "one billion, seventy-seven million, four hundred seventy-five thousand, twenty-one".