1201153541 has 16 divisors (see below), whose sum is σ = 1443391488. Its totient is φ = 977262000.

The previous prime is 1201153531. The next prime is 1201153543. The reversal of 1201153541 is 1453511021.

It is a cyclic number.

It is not a de Polignac number, because 1201153541 - 2¹⁰ = 1201152517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201153543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7385 + ... + 49566.

It is an arithmetic number, because the mean of its divisors is an integer number (90211968).

Almost surely, 2^1201153541 is an apocalyptic number.

It is an amenable number.

1201153541 is a deficient number, since it is larger than the sum of its proper divisors (242237947).

1201153541 is a wasteful number, since it uses less digits than its factorization.

1201153541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57112.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1201153541 is about 34657.6620821428. The cubic root of 1201153541 is about 1062.9989657523.

Adding to 1201153541 its reverse (1453511021), we get a palindrome (2654664562).

The spelling of 1201153541 in words is "one billion, two hundred one million, one hundred fifty-three thousand, five hundred forty-one".