61520375 has 16 divisors (see below), whose sum is σ = 87746880. Its totient is φ = 42184800.

The previous prime is 61520369. The next prime is 61520383. The reversal of 61520375 is 57302516.

It is not a de Polignac number, because 61520375 - 2¹⁸ = 61258231 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34280 + ... + 36029.

It is an arithmetic number, because the mean of its divisors is an integer number (5484180).

Almost surely, 2^61520375 is an apocalyptic number.

61520375 is a deficient number, since it is larger than the sum of its proper divisors (26226505).

61520375 is an equidigital number, since it uses as much as digits as its factorization.

61520375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70331 (or 70321 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 61520375 is about 7843.4925256546. The cubic root of 61520375 is about 394.7659244460.

The spelling of 61520375 in words is "sixty-one million, five hundred twenty thousand, three hundred seventy-five".