611772251 has 12 divisors (see below), whose sum is σ = 656341440. Its totient is φ = 570057600.

The previous prime is 611772211. The next prime is 611772253. The reversal of 611772251 is 152277116.

It is not a de Polignac number, because 611772251 - 2²⁶ = 544663387 is a prime.

It is a super-3 number, since 3×611772251³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (611772253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18710 + ... + 39668.

It is an arithmetic number, because the mean of its divisors is an integer number (54695120).

Almost surely, 2^611772251 is an apocalyptic number.

611772251 is a deficient number, since it is larger than the sum of its proper divisors (44569189).

611772251 is a wasteful number, since it uses less digits than its factorization.

611772251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21094 (or 21077 counting only the distinct ones).

The product of its digits is 5880, while the sum is 32.

The square root of 611772251 is about 24734.0302215389. The cubic root of 611772251 is about 848.9131442133.

The spelling of 611772251 in words is "six hundred eleven million, seven hundred seventy-two thousand, two hundred fifty-one".