611252421 has 16 divisors (see below), whose sum is σ = 888275136. Its totient is φ = 371621376.

The previous prime is 611252413. The next prime is 611252429. The reversal of 611252421 is 124252116.

It is an interprime number because it is at equal distance from previous prime (611252413) and next prime (611252429).

It is not a de Polignac number, because 611252421 - 2³ = 611252413 is a prime.

It is a super-2 number, since 2×611252421² = 747259044356722482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 611252391 and 611252400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611252429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91180 + ... + 97653.

It is an arithmetic number, because the mean of its divisors is an integer number (55517196).

Almost surely, 2^611252421 is an apocalyptic number.

It is an amenable number.

611252421 is a deficient number, since it is larger than the sum of its proper divisors (277022715).

611252421 is a wasteful number, since it uses less digits than its factorization.

611252421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188932.

The product of its digits is 960, while the sum is 24.

The square root of 611252421 is about 24723.5195916763. The cubic root of 611252421 is about 848.6726322864.

It can be divided in two parts, 61125 and 2421, that added together give a triangular number (63546 = T₃₅₆).

The spelling of 611252421 in words is "six hundred eleven million, two hundred fifty-two thousand, four hundred twenty-one".