1055147321 has 8 divisors (see below), whose sum is σ = 1081707264. Its totient is φ = 1028758720.

The previous prime is 1055147309. The next prime is 1055147323. The reversal of 1055147321 is 1237415501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055147321 is a prime.

It is a super-2 number, since 2×1055147321² = 2226671738026954082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055147323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30320 + ... + 55041.

It is an arithmetic number, because the mean of its divisors is an integer number (135213408).

Almost surely, 2^1055147321 is an apocalyptic number.

It is an amenable number.

1055147321 is a deficient number, since it is larger than the sum of its proper divisors (26559943).

1055147321 is an equidigital number, since it uses as much as digits as its factorization.

1055147321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85671.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 1055147321 is about 32483.0312778842. The cubic root of 1055147321 is about 1018.0545131717.

The spelling of 1055147321 in words is "one billion, fifty-five million, one hundred forty-seven thousand, three hundred twenty-one".