1057216061 has 8 divisors (see below), whose sum is σ = 1154526048. Its totient is φ = 960106000.

The previous prime is 1057216051. The next prime is 1057216067. The reversal of 1057216061 is 1606127501.

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 1057216061 - 2⁶ = 1057215997 is a prime.

It is a super-2 number, since 2×1057216061² = 2235411599272711442, which contains 22 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 (1057216067) 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, 38810 + ... + 60171.

It is an arithmetic number, because the mean of its divisors is an integer number (144315756).

Almost surely, 2^1057216061 is an apocalyptic number.

1057216061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1057216061 is a deficient number, since it is larger than the sum of its proper divisors (97309987).

1057216061 is an equidigital number, since it uses as much as digits as its factorization.

1057216061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99963.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 1057216061 is about 32514.8590801190. The cubic root of 1057216061 is about 1018.7194172209.

The spelling of 1057216061 in words is "one billion, fifty-seven million, two hundred sixteen thousand, sixty-one".