1201561570 has 16 divisors (see below), whose sum is σ = 2359430208. Its totient is φ = 436931440.

The previous prime is 1201561523. The next prime is 1201561573. The reversal of 1201561570 is 751651021.

It is not an unprimeable number, because it can be changed into a prime (1201561573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5461534 + ... + 5461753.

It is an arithmetic number, because the mean of its divisors is an integer number (147464388).

Almost surely, 2^1201561570 is an apocalyptic number.

1201561570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201561570 is a deficient number, since it is larger than the sum of its proper divisors (1157868638).

1201561570 is a wasteful number, since it uses less digits than its factorization.

1201561570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10923305.

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

The square root of 1201561570 is about 34663.5481449894. The cubic root of 1201561570 is about 1063.1193181987.

The spelling of 1201561570 in words is "one billion, two hundred one million, five hundred sixty-one thousand, five hundred seventy".