61121053 has 4 divisors (see below), whose sum is σ = 69852640. Its totient is φ = 52389468.

The previous prime is 61121041. The next prime is 61121101. The reversal of 61121053 is 35012116.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61121053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61121053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61124053) 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, 4365783 + ... + 4365796.

It is an arithmetic number, because the mean of its divisors is an integer number (17463160).

Almost surely, 2^61121053 is an apocalyptic number.

It is an amenable number.

61121053 is a deficient number, since it is larger than the sum of its proper divisors (8731587).

61121053 is an equidigital number, since it uses as much as digits as its factorization.

61121053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8731586.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 61121053 is about 7817.9954591954. The cubic root of 61121053 is about 393.9099423120.

Adding to 61121053 its reverse (35012116), we get a palindrome (96133169).

The spelling of 61121053 in words is "sixty-one million, one hundred twenty-one thousand, fifty-three".