61122357 has 10 divisors (see below), whose sum is σ = 91306358. Its totient is φ = 40748184.

The previous prime is 61122337. The next prime is 61122367. The reversal of 61122357 is 75322116.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59074596 + 2047761 = 7686^2 + 1431^2 .

It is not a de Polignac number, because 61122357 - 2¹² = 61118261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 61122357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61122317) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 377218 + ... + 377379.

Almost surely, 2^61122357 is an apocalyptic number.

It is an amenable number.

61122357 is a deficient number, since it is larger than the sum of its proper divisors (30184001).

61122357 is an equidigital number, since it uses as much as digits as its factorization.

61122357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754609 (or 754600 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 61122357 is about 7818.0788560873. The cubic root of 61122357 is about 393.9127436104.

The spelling of 61122357 in words is "sixty-one million, one hundred twenty-two thousand, three hundred fifty-seven".