120207553 has 4 divisors (see below), whose sum is σ = 124085248. Its totient is φ = 116329860.

The previous prime is 120207533. The next prime is 120207587. The reversal of 120207553 is 355702021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355702021 = 19 ⋅18721159.

It is a cyclic number.

It is not a de Polignac number, because 120207553 - 2¹³ = 120199361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120207533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1938801 + ... + 1938862.

It is an arithmetic number, because the mean of its divisors is an integer number (31021312).

Almost surely, 2^120207553 is an apocalyptic number.

It is an amenable number.

120207553 is a deficient number, since it is larger than the sum of its proper divisors (3877695).

120207553 is an equidigital number, since it uses as much as digits as its factorization.

120207553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877694.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 120207553 is about 10963.9205122985. The cubic root of 120207553 is about 493.5266231364.

Adding to 120207553 its reverse (355702021), we get a palindrome (475909574).

The spelling of 120207553 in words is "one hundred twenty million, two hundred seven thousand, five hundred fifty-three".