1601215057 has 8 divisors (see below), whose sum is σ = 1825820136. Its totient is φ = 1391100672.

The previous prime is 1601215051. The next prime is 1601215103. The reversal of 1601215057 is 7505121061.

It can be written as a sum of positive squares in 4 ways, for example, as 466603201 + 1134611856 = 21601^2 + 33684^2 .

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

It is not a de Polignac number, because 1601215057 - 2⁷ = 1601214929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1601215051) 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, 3622438 + ... + 3622879.

It is an arithmetic number, because the mean of its divisors is an integer number (228227517).

Almost surely, 2^1601215057 is an apocalyptic number.

1601215057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1601215057 is a deficient number, since it is larger than the sum of its proper divisors (224605079).

1601215057 is a wasteful number, since it uses less digits than its factorization.

1601215057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7245347.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 1601215057 is about 40015.1853300719. The cubic root of 1601215057 is about 1169.9030910554.

The spelling of 1601215057 in words is "one billion, six hundred one million, two hundred fifteen thousand, fifty-seven".