61145392 has 80 divisors (see below), whose sum is σ = 152561664. Its totient is φ = 23040000.

The previous prime is 61145389. The next prime is 61145393. The reversal of 61145392 is 29354116.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (61145393) 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, 37392 + ... + 38992.

Almost surely, 2^61145392 is an apocalyptic number.

61145392 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61145392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76280832).

61145392 is an abundant number, since it is smaller than the sum of its proper divisors (91416272).

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

61145392 is a wasteful number, since it uses less digits than its factorization.

61145392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658 (or 1652 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 61145392 is about 7819.5519053204. The cubic root of 61145392 is about 393.9622216348.

The spelling of 61145392 in words is "sixty-one million, one hundred forty-five thousand, three hundred ninety-two".