57220151 has 2 divisors, whose sum is σ = 57220152. Its totient is φ = 57220150.

The previous prime is 57220139. The next prime is 57220157. The reversal of 57220151 is 15102275.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57220151 - 2⁶ = 57220087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57220157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28610075 + 28610076.

It is an arithmetic number, because the mean of its divisors is an integer number (28610076).

Almost surely, 2^57220151 is an apocalyptic number.

57220151 is a deficient number, since it is larger than the sum of its proper divisors (1).

57220151 is an equidigital number, since it uses as much as digits as its factorization.

57220151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 57220151 is about 7564.4002406007. The cubic root of 57220151 is about 385.3449452493.

The spelling of 57220151 in words is "fifty-seven million, two hundred twenty thousand, one hundred fifty-one".