1057205650 has 24 divisors (see below), whose sum is σ = 1991301120. Its totient is φ = 417527760.

The previous prime is 1057205621. The next prime is 1057205651. The reversal of 1057205650 is 565027501.

It is a super-2 number, since 2×1057205650² = 2235367572783845000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1057205651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129874 + ... + 137773.

It is an arithmetic number, because the mean of its divisors is an integer number (82970880).

Almost surely, 2^1057205650 is an apocalyptic number.

1057205650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1057205650 is a deficient number, since it is larger than the sum of its proper divisors (934095470).

1057205650 is a wasteful number, since it uses less digits than its factorization.

1057205650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267738 (or 267733 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 1057205650 is about 32514.6989836904. The cubic root of 1057205650 is about 1018.7160732426.

The spelling of 1057205650 in words is "one billion, fifty-seven million, two hundred five thousand, six hundred fifty".