53212416 has 72 divisors (see below), whose sum is σ = 142752960. Its totient is φ = 17596416.

The previous prime is 53212403. The next prime is 53212427. The reversal of 53212416 is 61421235.

It is a super-2 number, since 2×53212416² = 5663122433114112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148045 + ... + 148403.

It is an arithmetic number, because the mean of its divisors is an integer number (1982680).

Almost surely, 2^53212416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53212416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71376480).

53212416 is an abundant number, since it is smaller than the sum of its proper divisors (89540544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53212416 is a wasteful number, since it uses less digits than its factorization.

53212416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 557 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 53212416 is about 7294.6840918576. The cubic root of 53212416 is about 376.1297273806.

It can be divided in two parts, 53212 and 416, that added together give a triangular number (53628 = T₃₂₇).

The spelling of 53212416 in words is "fifty-three million, two hundred twelve thousand, four hundred sixteen".